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<h1 class="epydoc">Source Code for <a href="pyspark.context-module.html">Module pyspark.context</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"><tt class="py-comment"># Licensed to the Apache Software Foundation (ASF) under one or more</tt> </tt>
<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"><tt class="py-comment"># contributor license agreements. See the NOTICE file distributed with</tt> </tt>
<a name="L4"></a><tt class="py-lineno"> 4</tt> <tt class="py-line"><tt class="py-comment"># this work for additional information regarding copyright ownership.</tt> </tt>
<a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"><tt class="py-comment"># The ASF licenses this file to You under the Apache License, Version 2.0</tt> </tt>
<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-comment"># (the "License"); you may not use this file except in compliance with</tt> </tt>
<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-comment"># the License. You may obtain a copy of the License at</tt> </tt>
<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-comment"># http://www.apache.org/licenses/LICENSE-2.0</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt> <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt> <tt class="py-line"><tt class="py-comment"># Unless required by applicable law or agreed to in writing, software</tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt> <tt class="py-line"><tt class="py-comment"># distributed under the License is distributed on an "AS IS" BASIS,</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt> <tt class="py-line"><tt class="py-comment"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt> <tt class="py-line"><tt class="py-comment"># See the License for the specific language governing permissions and</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt> <tt class="py-line"><tt class="py-comment"># limitations under the License.</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt> <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt> <tt class="py-line"> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">os</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">shutil</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">sys</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">threading</tt> <tt class="py-keyword">import</tt> <tt class="py-name">Lock</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">tempfile</tt> <tt class="py-keyword">import</tt> <tt class="py-name">NamedTemporaryFile</tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt> <tt class="py-line"> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-0" class="py-name" targets="Package pyspark=pyspark-module.html"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-0', 'pyspark', 'link-0');">pyspark</a></tt> <tt class="py-keyword">import</tt> <tt id="link-1" class="py-name" targets="Module pyspark.accumulators=pyspark.accumulators-module.html"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-1', 'accumulators', 'link-1');">accumulators</a></tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-2" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-2', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-3" class="py-name"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-3', 'accumulators', 'link-1');">accumulators</a></tt> <tt class="py-keyword">import</tt> <tt id="link-4" class="py-name" targets="Class pyspark.accumulators.Accumulator=pyspark.accumulators.Accumulator-class.html"><a title="pyspark.accumulators.Accumulator" class="py-name" href="#" onclick="return doclink('link-4', 'Accumulator', 'link-4');">Accumulator</a></tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-5" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-5', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-6" class="py-name" targets="Module pyspark.broadcast=pyspark.broadcast-module.html,Method pyspark.context.SparkContext.broadcast()=pyspark.context.SparkContext-class.html#broadcast"><a title="pyspark.broadcast
pyspark.context.SparkContext.broadcast" class="py-name" href="#" onclick="return doclink('link-6', 'broadcast', 'link-6');">broadcast</a></tt> <tt class="py-keyword">import</tt> <tt id="link-7" class="py-name" targets="Class pyspark.broadcast.Broadcast=pyspark.broadcast.Broadcast-class.html"><a title="pyspark.broadcast.Broadcast" class="py-name" href="#" onclick="return doclink('link-7', 'Broadcast', 'link-7');">Broadcast</a></tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-8" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-8', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-9" class="py-name" targets="Module pyspark.conf=pyspark.conf-module.html"><a title="pyspark.conf" class="py-name" href="#" onclick="return doclink('link-9', 'conf', 'link-9');">conf</a></tt> <tt class="py-keyword">import</tt> <tt id="link-10" class="py-name" targets="Class pyspark.conf.SparkConf=pyspark.conf.SparkConf-class.html"><a title="pyspark.conf.SparkConf" class="py-name" href="#" onclick="return doclink('link-10', 'SparkConf', 'link-10');">SparkConf</a></tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-11" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-11', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-12" class="py-name" targets="Module pyspark.files=pyspark.files-module.html"><a title="pyspark.files" class="py-name" href="#" onclick="return doclink('link-12', 'files', 'link-12');">files</a></tt> <tt class="py-keyword">import</tt> <tt id="link-13" class="py-name" targets="Class pyspark.files.SparkFiles=pyspark.files.SparkFiles-class.html"><a title="pyspark.files.SparkFiles" class="py-name" href="#" onclick="return doclink('link-13', 'SparkFiles', 'link-13');">SparkFiles</a></tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-14" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-14', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt class="py-name">java_gateway</tt> <tt class="py-keyword">import</tt> <tt class="py-name">launch_gateway</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-15" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-15', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-16" class="py-name" targets="Module pyspark.serializers=pyspark.serializers-module.html"><a title="pyspark.serializers" class="py-name" href="#" onclick="return doclink('link-16', 'serializers', 'link-16');">serializers</a></tt> <tt class="py-keyword">import</tt> <tt id="link-17" class="py-name" targets="Class pyspark.serializers.PickleSerializer=pyspark.serializers.PickleSerializer-class.html"><a title="pyspark.serializers.PickleSerializer" class="py-name" href="#" onclick="return doclink('link-17', 'PickleSerializer', 'link-17');">PickleSerializer</a></tt><tt class="py-op">,</tt> <tt class="py-name">BatchedSerializer</tt><tt class="py-op">,</tt> <tt class="py-name">UTF8Deserializer</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-18" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-18', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-19" class="py-name" targets="Module pyspark.storagelevel=pyspark.storagelevel-module.html"><a title="pyspark.storagelevel" class="py-name" href="#" onclick="return doclink('link-19', 'storagelevel', 'link-19');">storagelevel</a></tt> <tt class="py-keyword">import</tt> <tt id="link-20" class="py-name" targets="Class pyspark.storagelevel.StorageLevel=pyspark.storagelevel.StorageLevel-class.html"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-20', 'StorageLevel', 'link-20');">StorageLevel</a></tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-21" class="py-name"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-21', 'pyspark', 'link-0');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-22" class="py-name" targets="Module pyspark.rdd=pyspark.rdd-module.html"><a title="pyspark.rdd" class="py-name" href="#" onclick="return doclink('link-22', 'rdd', 'link-22');">rdd</a></tt> <tt class="py-keyword">import</tt> <tt id="link-23" class="py-name" targets="Class pyspark.rdd.RDD=pyspark.rdd.RDD-class.html"><a title="pyspark.rdd.RDD" class="py-name" href="#" onclick="return doclink('link-23', 'RDD', 'link-23');">RDD</a></tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt> <tt class="py-line"> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">py4j</tt><tt class="py-op">.</tt><tt class="py-name">java_collections</tt> <tt class="py-keyword">import</tt> <tt class="py-name">ListConverter</tt> </tt>
<a name="SparkContext"></a><div id="SparkContext-def"><a name="L35"></a><tt class="py-lineno"> 35</tt> <tt class="py-line"> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt> <tt class="py-line"> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt> <a class="py-toggle" href="#" id="SparkContext-toggle" onclick="return toggle('SparkContext');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html">SparkContext</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="SparkContext-expanded"><a name="L38"></a><tt class="py-lineno"> 38</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt> <tt class="py-line"><tt class="py-docstring"> Main entry point for Spark functionality. A SparkContext represents the</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt> <tt class="py-line"><tt class="py-docstring"> connection to a Spark cluster, and can be used to create L{RDD}s and</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt> <tt class="py-line"><tt class="py-docstring"> broadcast variables on that cluster.</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt> <tt class="py-line"> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt> <tt class="py-line"> <tt id="link-24" class="py-name" targets="Variable pyspark.context.SparkContext._gateway=pyspark.context.SparkContext-class.html#_gateway"><a title="pyspark.context.SparkContext._gateway" class="py-name" href="#" onclick="return doclink('link-24', '_gateway', 'link-24');">_gateway</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt> <tt class="py-line"> <tt id="link-25" class="py-name" targets="Variable pyspark.context.SparkContext._jvm=pyspark.context.SparkContext-class.html#_jvm"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-25', '_jvm', 'link-25');">_jvm</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt> <tt class="py-line"> <tt id="link-26" class="py-name" targets="Variable pyspark.context.SparkContext._writeToFile=pyspark.context.SparkContext-class.html#_writeToFile"><a title="pyspark.context.SparkContext._writeToFile" class="py-name" href="#" onclick="return doclink('link-26', '_writeToFile', 'link-26');">_writeToFile</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt> <tt class="py-line"> <tt id="link-27" class="py-name" targets="Variable pyspark.context.SparkContext._next_accum_id=pyspark.context.SparkContext-class.html#_next_accum_id"><a title="pyspark.context.SparkContext._next_accum_id" class="py-name" href="#" onclick="return doclink('link-27', '_next_accum_id', 'link-27');">_next_accum_id</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt> <tt class="py-line"> <tt id="link-28" class="py-name" targets="Variable pyspark.context.SparkContext._active_spark_context=pyspark.context.SparkContext-class.html#_active_spark_context"><a title="pyspark.context.SparkContext._active_spark_context" class="py-name" href="#" onclick="return doclink('link-28', '_active_spark_context', 'link-28');">_active_spark_context</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt> <tt class="py-line"> <tt id="link-29" class="py-name" targets="Variable pyspark.context.SparkContext._lock=pyspark.context.SparkContext-class.html#_lock"><a title="pyspark.context.SparkContext._lock" class="py-name" href="#" onclick="return doclink('link-29', '_lock', 'link-29');">_lock</a></tt> <tt class="py-op">=</tt> <tt class="py-name">Lock</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt> <tt class="py-line"> <tt id="link-30" class="py-name" targets="Variable pyspark.context.SparkContext._python_includes=pyspark.context.SparkContext-class.html#_python_includes"><a title="pyspark.context.SparkContext._python_includes" class="py-name" href="#" onclick="return doclink('link-30', '_python_includes', 'link-30');">_python_includes</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> <tt class="py-comment"># zip and egg files that need to be added to PYTHONPATH</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt> <tt class="py-line"> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt> <tt class="py-line"> </tt>
<a name="SparkContext.__init__"></a><div id="SparkContext.__init__-def"><a name="L53"></a><tt class="py-lineno"> 53</tt> <a class="py-toggle" href="#" id="SparkContext.__init__-toggle" onclick="return toggle('SparkContext.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">master</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">appName</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">sparkHome</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">pyFiles</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt> <tt class="py-line"> <tt class="py-param">environment</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">batchSize</tt><tt class="py-op">=</tt><tt class="py-number">1024</tt><tt class="py-op">,</tt> <tt class="py-param">serializer</tt><tt class="py-op">=</tt><tt id="link-31" class="py-name"><a title="pyspark.serializers.PickleSerializer" class="py-name" href="#" onclick="return doclink('link-31', 'PickleSerializer', 'link-17');">PickleSerializer</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-param">conf</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.__init__-expanded"><a name="L55"></a><tt class="py-lineno"> 55</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt> <tt class="py-line"><tt class="py-docstring"> Create a new SparkContext. At least the master and app name should be set,</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt> <tt class="py-line"><tt class="py-docstring"> either through the named parameters here or through C{conf}.</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt> <tt class="py-line"><tt class="py-docstring"> @param master: Cluster URL to connect to</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt> <tt class="py-line"><tt class="py-docstring"> (e.g. mesos://host:port, spark://host:port, local[4]).</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt> <tt class="py-line"><tt class="py-docstring"> @param appName: A name for your job, to display on the cluster web UI.</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt> <tt class="py-line"><tt class="py-docstring"> @param sparkHome: Location where Spark is installed on cluster nodes.</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt> <tt class="py-line"><tt class="py-docstring"> @param pyFiles: Collection of .zip or .py files to send to the cluster</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt> <tt class="py-line"><tt class="py-docstring"> and add to PYTHONPATH. These can be paths on the local file</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt> <tt class="py-line"><tt class="py-docstring"> system or HDFS, HTTP, HTTPS, or FTP URLs.</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt> <tt class="py-line"><tt class="py-docstring"> @param environment: A dictionary of environment variables to set on</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt> <tt class="py-line"><tt class="py-docstring"> worker nodes.</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt> <tt class="py-line"><tt class="py-docstring"> @param batchSize: The number of Python objects represented as a single</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt> <tt class="py-line"><tt class="py-docstring"> Java object. Set 1 to disable batching or -1 to use an</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt> <tt class="py-line"><tt class="py-docstring"> unlimited batch size.</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt> <tt class="py-line"><tt class="py-docstring"> @param serializer: The serializer for RDDs.</tt> </tt>
<a name="L72"></a><tt class="py-lineno"> 72</tt> <tt class="py-line"><tt class="py-docstring"> @param conf: A L{SparkConf} object setting Spark properties.</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt> <tt class="py-line"><tt class="py-docstring"> >>> from pyspark.context import SparkContext</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt> <tt class="py-line"><tt class="py-docstring"> >>> sc = SparkContext('local', 'test')</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt> <tt class="py-line"><tt class="py-docstring"> >>> sc2 = SparkContext('local', 'test2') # doctest: +IGNORE_EXCEPTION_DETAIL</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt> <tt class="py-line"><tt class="py-docstring"> Traceback (most recent call last):</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt> <tt class="py-line"><tt class="py-docstring"> ...</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt> <tt class="py-line"><tt class="py-docstring"> ValueError:...</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt> <tt class="py-line"> <tt id="link-32" class="py-name" targets="Class pyspark.context.SparkContext=pyspark.context.SparkContext-class.html"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-32', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt class="py-name">_ensure_initialized</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">)</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt> <tt class="py-line"> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">environment</tt> <tt class="py-op">=</tt> <tt class="py-name">environment</tt> <tt class="py-keyword">or</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt> <tt class="py-op">=</tt> <tt id="link-33" class="py-name"><a title="pyspark.conf" class="py-name" href="#" onclick="return doclink('link-33', 'conf', 'link-9');">conf</a></tt> <tt class="py-keyword">or</tt> <tt id="link-34" class="py-name"><a title="pyspark.conf.SparkConf" class="py-name" href="#" onclick="return doclink('link-34', 'SparkConf', 'link-10');">SparkConf</a></tt><tt class="py-op">(</tt><tt id="link-35" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-35', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">=</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-36" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-36', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">)</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_batchSize</tt> <tt class="py-op">=</tt> <tt class="py-name">batchSize</tt> <tt class="py-comment"># -1 represents an unlimited batch size</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_unbatched_serializer</tt> <tt class="py-op">=</tt> <tt class="py-name">serializer</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">batchSize</tt> <tt class="py-op">==</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">serializer</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_unbatched_serializer</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">serializer</tt> <tt class="py-op">=</tt> <tt class="py-name">BatchedSerializer</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_unbatched_serializer</tt><tt class="py-op">,</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt> <tt class="py-line"> <tt class="py-name">batchSize</tt><tt class="py-op">)</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt> <tt class="py-line"> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt> <tt class="py-line"> <tt class="py-comment"># Set any parameters passed directly to us on the conf</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">master</tt><tt class="py-op">:</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-37" class="py-name" targets="Method pyspark.conf.SparkConf.setMaster()=pyspark.conf.SparkConf-class.html#setMaster"><a title="pyspark.conf.SparkConf.setMaster" class="py-name" href="#" onclick="return doclink('link-37', 'setMaster', 'link-37');">setMaster</a></tt><tt class="py-op">(</tt><tt class="py-name">master</tt><tt class="py-op">)</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">appName</tt><tt class="py-op">:</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-38" class="py-name" targets="Method pyspark.conf.SparkConf.setAppName()=pyspark.conf.SparkConf-class.html#setAppName"><a title="pyspark.conf.SparkConf.setAppName" class="py-name" href="#" onclick="return doclink('link-38', 'setAppName', 'link-38');">setAppName</a></tt><tt class="py-op">(</tt><tt class="py-name">appName</tt><tt class="py-op">)</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">sparkHome</tt><tt class="py-op">:</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-39" class="py-name" targets="Method pyspark.conf.SparkConf.setSparkHome()=pyspark.conf.SparkConf-class.html#setSparkHome"><a title="pyspark.conf.SparkConf.setSparkHome" class="py-name" href="#" onclick="return doclink('link-39', 'setSparkHome', 'link-39');">setSparkHome</a></tt><tt class="py-op">(</tt><tt class="py-name">sparkHome</tt><tt class="py-op">)</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">environment</tt><tt class="py-op">:</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt> <tt class="py-line"> <tt class="py-keyword">for</tt> <tt class="py-name">key</tt><tt class="py-op">,</tt> <tt id="link-40" class="py-name" targets="Method pyspark.accumulators.Accumulator.value()=pyspark.accumulators.Accumulator-class.html#value"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-40', 'value', 'link-40');">value</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">environment</tt><tt class="py-op">.</tt><tt class="py-name">iteritems</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-41" class="py-name" targets="Method pyspark.conf.SparkConf.setExecutorEnv()=pyspark.conf.SparkConf-class.html#setExecutorEnv"><a title="pyspark.conf.SparkConf.setExecutorEnv" class="py-name" href="#" onclick="return doclink('link-41', 'setExecutorEnv', 'link-41');">setExecutorEnv</a></tt><tt class="py-op">(</tt><tt class="py-name">key</tt><tt class="py-op">,</tt> <tt id="link-42" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-42', 'value', 'link-40');">value</a></tt><tt class="py-op">)</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt> <tt class="py-line"> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt> <tt class="py-line"> <tt class="py-comment"># Check that we have at least the required parameters</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-43" class="py-name" targets="Method pyspark.conf.SparkConf.contains()=pyspark.conf.SparkConf-class.html#contains"><a title="pyspark.conf.SparkConf.contains" class="py-name" href="#" onclick="return doclink('link-43', 'contains', 'link-43');">contains</a></tt><tt class="py-op">(</tt><tt class="py-string">"spark.master"</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">Exception</tt><tt class="py-op">(</tt><tt class="py-string">"A master URL must be set in your configuration"</tt><tt class="py-op">)</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-44" class="py-name"><a title="pyspark.conf.SparkConf.contains" class="py-name" href="#" onclick="return doclink('link-44', 'contains', 'link-43');">contains</a></tt><tt class="py-op">(</tt><tt class="py-string">"spark.app.name"</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">Exception</tt><tt class="py-op">(</tt><tt class="py-string">"An application name must be set in your configuration"</tt><tt class="py-op">)</tt> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt> <tt class="py-line"> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt> <tt class="py-line"> <tt class="py-comment"># Read back our properties from the conf in case we loaded some of them from</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt> <tt class="py-line"> <tt class="py-comment"># the classpath or an external config file</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">master</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-45" class="py-name" targets="Method pyspark.conf.SparkConf.get()=pyspark.conf.SparkConf-class.html#get,Class Method pyspark.files.SparkFiles.get()=pyspark.files.SparkFiles-class.html#get"><a title="pyspark.conf.SparkConf.get
pyspark.files.SparkFiles.get" class="py-name" href="#" onclick="return doclink('link-45', 'get', 'link-45');">get</a></tt><tt class="py-op">(</tt><tt class="py-string">"spark.master"</tt><tt class="py-op">)</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">appName</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-46" class="py-name"><a title="pyspark.conf.SparkConf.get
pyspark.files.SparkFiles.get" class="py-name" href="#" onclick="return doclink('link-46', 'get', 'link-45');">get</a></tt><tt class="py-op">(</tt><tt class="py-string">"spark.app.name"</tt><tt class="py-op">)</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">sparkHome</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-47" class="py-name"><a title="pyspark.conf.SparkConf.get
pyspark.files.SparkFiles.get" class="py-name" href="#" onclick="return doclink('link-47', 'get', 'link-45');">get</a></tt><tt class="py-op">(</tt><tt class="py-string">"spark.home"</tt><tt class="py-op">,</tt> <tt class="py-name">None</tt><tt class="py-op">)</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt> <tt class="py-line"> <tt class="py-keyword">for</tt> <tt class="py-op">(</tt><tt class="py-name">k</tt><tt class="py-op">,</tt> <tt class="py-name">v</tt><tt class="py-op">)</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt id="link-48" class="py-name" targets="Method pyspark.conf.SparkConf.getAll()=pyspark.conf.SparkConf-class.html#getAll"><a title="pyspark.conf.SparkConf.getAll" class="py-name" href="#" onclick="return doclink('link-48', 'getAll', 'link-48');">getAll</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">k</tt><tt class="py-op">.</tt><tt class="py-name">startswith</tt><tt class="py-op">(</tt><tt class="py-string">"spark.executorEnv."</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt> <tt class="py-line"> <tt class="py-name">varName</tt> <tt class="py-op">=</tt> <tt class="py-name">k</tt><tt class="py-op">[</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-string">"spark.executorEnv."</tt><tt class="py-op">)</tt><tt class="py-op">:</tt><tt class="py-op">]</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">environment</tt><tt class="py-op">[</tt><tt class="py-name">varName</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">v</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt> <tt class="py-line"> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt> <tt class="py-line"> <tt class="py-comment"># Create the Java SparkContext through Py4J</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-49" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-49', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">JavaSparkContext</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_conf</tt><tt class="py-op">.</tt><tt class="py-name">_jconf</tt><tt class="py-op">)</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt> <tt class="py-line"> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt> <tt class="py-line"> <tt class="py-comment"># Create a single Accumulator in Java that we'll send all our updates through;</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt> <tt class="py-line"> <tt class="py-comment"># they will be passed back to us through a TCP server</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_accumulatorServer</tt> <tt class="py-op">=</tt> <tt id="link-50" class="py-name"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-50', 'accumulators', 'link-1');">accumulators</a></tt><tt class="py-op">.</tt><tt class="py-name">_start_update_server</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt> <tt class="py-line"> <tt class="py-op">(</tt><tt class="py-name">host</tt><tt class="py-op">,</tt> <tt class="py-name">port</tt><tt class="py-op">)</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_accumulatorServer</tt><tt class="py-op">.</tt><tt class="py-name">server_address</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_javaAccumulator</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt id="link-51" class="py-name" targets="Method pyspark.context.SparkContext.accumulator()=pyspark.context.SparkContext-class.html#accumulator"><a title="pyspark.context.SparkContext.accumulator" class="py-name" href="#" onclick="return doclink('link-51', 'accumulator', 'link-51');">accumulator</a></tt><tt class="py-op">(</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-52" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-52', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">java</tt><tt class="py-op">.</tt><tt class="py-name">util</tt><tt class="py-op">.</tt><tt class="py-name">ArrayList</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-53" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-53', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">PythonAccumulatorParam</tt><tt class="py-op">(</tt><tt class="py-name">host</tt><tt class="py-op">,</tt> <tt class="py-name">port</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt> <tt class="py-line"> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">pythonExec</tt> <tt class="py-op">=</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">environ</tt><tt class="py-op">.</tt><tt id="link-54" class="py-name"><a title="pyspark.conf.SparkConf.get
pyspark.files.SparkFiles.get" class="py-name" href="#" onclick="return doclink('link-54', 'get', 'link-45');">get</a></tt><tt class="py-op">(</tt><tt class="py-string">"PYSPARK_PYTHON"</tt><tt class="py-op">,</tt> <tt class="py-string">'python'</tt><tt class="py-op">)</tt> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt> <tt class="py-line"> </tt>
<a name="L135"></a><tt class="py-lineno">135</tt> <tt class="py-line"> <tt class="py-comment"># Broadcast's __reduce__ method stores Broadcast instances here.</tt> </tt>
<a name="L136"></a><tt class="py-lineno">136</tt> <tt class="py-line"> <tt class="py-comment"># This allows other code to determine which Broadcast instances have</tt> </tt>
<a name="L137"></a><tt class="py-lineno">137</tt> <tt class="py-line"> <tt class="py-comment"># been pickled, so it can determine which Java broadcast objects to</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt> <tt class="py-line"> <tt class="py-comment"># send.</tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_pickled_broadcast_vars</tt> <tt class="py-op">=</tt> <tt id="link-55" class="py-name" targets="Method pyspark.conf.SparkConf.set()=pyspark.conf.SparkConf-class.html#set"><a title="pyspark.conf.SparkConf.set" class="py-name" href="#" onclick="return doclink('link-55', 'set', 'link-55');">set</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt> <tt class="py-line"> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt> <tt class="py-line"> <tt id="link-56" class="py-name"><a title="pyspark.files.SparkFiles" class="py-name" href="#" onclick="return doclink('link-56', 'SparkFiles', 'link-13');">SparkFiles</a></tt><tt class="py-op">.</tt><tt id="link-57" class="py-name" targets="Variable pyspark.files.SparkFiles._sc=pyspark.files.SparkFiles-class.html#_sc"><a title="pyspark.files.SparkFiles._sc" class="py-name" href="#" onclick="return doclink('link-57', '_sc', 'link-57');">_sc</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt> <tt class="py-line"> <tt class="py-name">root_dir</tt> <tt class="py-op">=</tt> <tt id="link-58" class="py-name"><a title="pyspark.files.SparkFiles" class="py-name" href="#" onclick="return doclink('link-58', 'SparkFiles', 'link-13');">SparkFiles</a></tt><tt class="py-op">.</tt><tt id="link-59" class="py-name" targets="Class Method pyspark.files.SparkFiles.getRootDirectory()=pyspark.files.SparkFiles-class.html#getRootDirectory"><a title="pyspark.files.SparkFiles.getRootDirectory" class="py-name" href="#" onclick="return doclink('link-59', 'getRootDirectory', 'link-59');">getRootDirectory</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L143"></a><tt class="py-lineno">143</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">root_dir</tt><tt class="py-op">)</tt> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt> <tt class="py-line"> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt> <tt class="py-line"> <tt class="py-comment"># Deploy any code dependencies specified in the constructor</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-60" class="py-name"><a title="pyspark.context.SparkContext._python_includes" class="py-name" href="#" onclick="return doclink('link-60', '_python_includes', 'link-30');">_python_includes</a></tt> <tt class="py-op">=</tt> <tt class="py-name">list</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L147"></a><tt class="py-lineno">147</tt> <tt class="py-line"> <tt class="py-keyword">for</tt> <tt class="py-name">path</tt> <tt class="py-keyword">in</tt> <tt class="py-op">(</tt><tt class="py-name">pyFiles</tt> <tt class="py-keyword">or</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L148"></a><tt class="py-lineno">148</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-61" class="py-name" targets="Method pyspark.context.SparkContext.addPyFile()=pyspark.context.SparkContext-class.html#addPyFile"><a title="pyspark.context.SparkContext.addPyFile" class="py-name" href="#" onclick="return doclink('link-61', 'addPyFile', 'link-61');">addPyFile</a></tt><tt class="py-op">(</tt><tt class="py-name">path</tt><tt class="py-op">)</tt> </tt>
<a name="L149"></a><tt class="py-lineno">149</tt> <tt class="py-line"> </tt>
<a name="L150"></a><tt class="py-lineno">150</tt> <tt class="py-line"> <tt class="py-comment"># Create a temporary directory inside spark.local.dir:</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt> <tt class="py-line"> <tt class="py-name">local_dir</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-62" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-62', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">org</tt><tt class="py-op">.</tt><tt class="py-name">apache</tt><tt class="py-op">.</tt><tt class="py-name">spark</tt><tt class="py-op">.</tt><tt class="py-name">util</tt><tt class="py-op">.</tt><tt class="py-name">Utils</tt><tt class="py-op">.</tt><tt class="py-name">getLocalDir</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">sc</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-63" class="py-name"><a title="pyspark.conf" class="py-name" href="#" onclick="return doclink('link-63', 'conf', 'link-9');">conf</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_temp_dir</tt> <tt class="py-op">=</tt> \ </tt>
<a name="L153"></a><tt class="py-lineno">153</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-64" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-64', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">org</tt><tt class="py-op">.</tt><tt class="py-name">apache</tt><tt class="py-op">.</tt><tt class="py-name">spark</tt><tt class="py-op">.</tt><tt class="py-name">util</tt><tt class="py-op">.</tt><tt class="py-name">Utils</tt><tt class="py-op">.</tt><tt class="py-name">createTempDir</tt><tt class="py-op">(</tt><tt class="py-name">local_dir</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">getAbsolutePath</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L154"></a><tt class="py-lineno">154</tt> <tt class="py-line"> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">classmethod</tt> </tt>
<a name="SparkContext._ensure_initialized"></a><div id="SparkContext._ensure_initialized-def"><a name="L156"></a><tt class="py-lineno">156</tt> <a class="py-toggle" href="#" id="SparkContext._ensure_initialized-toggle" onclick="return toggle('SparkContext._ensure_initialized');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#_ensure_initialized">_ensure_initialized</a><tt class="py-op">(</tt><tt class="py-param">cls</tt><tt class="py-op">,</tt> <tt class="py-param">instance</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext._ensure_initialized-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext._ensure_initialized-expanded"><a name="L157"></a><tt class="py-lineno">157</tt> <tt class="py-line"> <tt class="py-keyword">with</tt> <tt id="link-65" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-65', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-66" class="py-name"><a title="pyspark.context.SparkContext._lock" class="py-name" href="#" onclick="return doclink('link-66', '_lock', 'link-29');">_lock</a></tt><tt class="py-op">:</tt> </tt>
<a name="L158"></a><tt class="py-lineno">158</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt id="link-67" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-67', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-68" class="py-name"><a title="pyspark.context.SparkContext._gateway" class="py-name" href="#" onclick="return doclink('link-68', '_gateway', 'link-24');">_gateway</a></tt><tt class="py-op">:</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt> <tt class="py-line"> <tt id="link-69" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-69', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-70" class="py-name"><a title="pyspark.context.SparkContext._gateway" class="py-name" href="#" onclick="return doclink('link-70', '_gateway', 'link-24');">_gateway</a></tt> <tt class="py-op">=</tt> <tt class="py-name">launch_gateway</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L160"></a><tt class="py-lineno">160</tt> <tt class="py-line"> <tt id="link-71" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-71', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-72" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-72', '_jvm', 'link-25');">_jvm</a></tt> <tt class="py-op">=</tt> <tt id="link-73" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-73', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-74" class="py-name"><a title="pyspark.context.SparkContext._gateway" class="py-name" href="#" onclick="return doclink('link-74', '_gateway', 'link-24');">_gateway</a></tt><tt class="py-op">.</tt><tt class="py-name">jvm</tt> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt> <tt class="py-line"> <tt id="link-75" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-75', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-76" class="py-name"><a title="pyspark.context.SparkContext._writeToFile" class="py-name" href="#" onclick="return doclink('link-76', '_writeToFile', 'link-26');">_writeToFile</a></tt> <tt class="py-op">=</tt> <tt id="link-77" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-77', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-78" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-78', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">PythonRDD</tt><tt class="py-op">.</tt><tt class="py-name">writeToFile</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt> <tt class="py-line"> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">instance</tt><tt class="py-op">:</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt id="link-79" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-79', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-80" class="py-name"><a title="pyspark.context.SparkContext._active_spark_context" class="py-name" href="#" onclick="return doclink('link-80', '_active_spark_context', 'link-28');">_active_spark_context</a></tt> <tt class="py-keyword">and</tt> <tt id="link-81" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-81', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-82" class="py-name"><a title="pyspark.context.SparkContext._active_spark_context" class="py-name" href="#" onclick="return doclink('link-82', '_active_spark_context', 'link-28');">_active_spark_context</a></tt> <tt class="py-op">!=</tt> <tt class="py-name">instance</tt><tt class="py-op">:</tt> </tt>
<a name="L165"></a><tt class="py-lineno">165</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">"Cannot run multiple SparkContexts at once"</tt><tt class="py-op">)</tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt> <tt class="py-line"> <tt id="link-83" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-83', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-84" class="py-name"><a title="pyspark.context.SparkContext._active_spark_context" class="py-name" href="#" onclick="return doclink('link-84', '_active_spark_context', 'link-28');">_active_spark_context</a></tt> <tt class="py-op">=</tt> <tt class="py-name">instance</tt> </tt>
</div><a name="L168"></a><tt class="py-lineno">168</tt> <tt class="py-line"> </tt>
<a name="L169"></a><tt class="py-lineno">169</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">classmethod</tt> </tt>
<a name="SparkContext.setSystemProperty"></a><div id="SparkContext.setSystemProperty-def"><a name="L170"></a><tt class="py-lineno">170</tt> <a class="py-toggle" href="#" id="SparkContext.setSystemProperty-toggle" onclick="return toggle('SparkContext.setSystemProperty');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#setSystemProperty">setSystemProperty</a><tt class="py-op">(</tt><tt class="py-param">cls</tt><tt class="py-op">,</tt> <tt class="py-param">key</tt><tt class="py-op">,</tt> <tt class="py-param">value</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.setSystemProperty-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.setSystemProperty-expanded"><a name="L171"></a><tt class="py-lineno">171</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L172"></a><tt class="py-lineno">172</tt> <tt class="py-line"><tt class="py-docstring"> Set a Java system property, such as spark.executor.memory. This must</tt> </tt>
<a name="L173"></a><tt class="py-lineno">173</tt> <tt class="py-line"><tt class="py-docstring"> must be invoked before instantiating SparkContext.</tt> </tt>
<a name="L174"></a><tt class="py-lineno">174</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt> <tt class="py-line"> <tt id="link-85" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-85', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt class="py-name">_ensure_initialized</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L176"></a><tt class="py-lineno">176</tt> <tt class="py-line"> <tt id="link-86" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-86', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-87" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-87', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">java</tt><tt class="py-op">.</tt><tt class="py-name">lang</tt><tt class="py-op">.</tt><tt class="py-name">System</tt><tt class="py-op">.</tt><tt class="py-name">setProperty</tt><tt class="py-op">(</tt><tt class="py-name">key</tt><tt class="py-op">,</tt> <tt id="link-88" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-88', 'value', 'link-40');">value</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L177"></a><tt class="py-lineno">177</tt> <tt class="py-line"> </tt>
<a name="L178"></a><tt class="py-lineno">178</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">property</tt> </tt>
<a name="SparkContext.defaultParallelism"></a><div id="SparkContext.defaultParallelism-def"><a name="L179"></a><tt class="py-lineno">179</tt> <a class="py-toggle" href="#" id="SparkContext.defaultParallelism-toggle" onclick="return toggle('SparkContext.defaultParallelism');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#defaultParallelism">defaultParallelism</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.defaultParallelism-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.defaultParallelism-expanded"><a name="L180"></a><tt class="py-lineno">180</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L181"></a><tt class="py-lineno">181</tt> <tt class="py-line"><tt class="py-docstring"> Default level of parallelism to use when not given by user (e.g. for</tt> </tt>
<a name="L182"></a><tt class="py-lineno">182</tt> <tt class="py-line"><tt class="py-docstring"> reduce tasks)</tt> </tt>
<a name="L183"></a><tt class="py-lineno">183</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">sc</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-89" class="py-name" targets="Method pyspark.context.SparkContext.defaultParallelism()=pyspark.context.SparkContext-class.html#defaultParallelism"><a title="pyspark.context.SparkContext.defaultParallelism" class="py-name" href="#" onclick="return doclink('link-89', 'defaultParallelism', 'link-89');">defaultParallelism</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L185"></a><tt class="py-lineno">185</tt> <tt class="py-line"> </tt>
<a name="SparkContext.__del__"></a><div id="SparkContext.__del__-def"><a name="L186"></a><tt class="py-lineno">186</tt> <a class="py-toggle" href="#" id="SparkContext.__del__-toggle" onclick="return toggle('SparkContext.__del__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#__del__">__del__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.__del__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.__del__-expanded"><a name="L187"></a><tt class="py-lineno">187</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-90" class="py-name" targets="Method pyspark.context.SparkContext.stop()=pyspark.context.SparkContext-class.html#stop"><a title="pyspark.context.SparkContext.stop" class="py-name" href="#" onclick="return doclink('link-90', 'stop', 'link-90');">stop</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L188"></a><tt class="py-lineno">188</tt> <tt class="py-line"> </tt>
<a name="SparkContext.stop"></a><div id="SparkContext.stop-def"><a name="L189"></a><tt class="py-lineno">189</tt> <a class="py-toggle" href="#" id="SparkContext.stop-toggle" onclick="return toggle('SparkContext.stop');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#stop">stop</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.stop-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.stop-expanded"><a name="L190"></a><tt class="py-lineno">190</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L191"></a><tt class="py-lineno">191</tt> <tt class="py-line"><tt class="py-docstring"> Shut down the SparkContext.</tt> </tt>
<a name="L192"></a><tt class="py-lineno">192</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L193"></a><tt class="py-lineno">193</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">:</tt> </tt>
<a name="L194"></a><tt class="py-lineno">194</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt id="link-91" class="py-name"><a title="pyspark.context.SparkContext.stop" class="py-name" href="#" onclick="return doclink('link-91', 'stop', 'link-90');">stop</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L196"></a><tt class="py-lineno">196</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_accumulatorServer</tt><tt class="py-op">:</tt> </tt>
<a name="L197"></a><tt class="py-lineno">197</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_accumulatorServer</tt><tt class="py-op">.</tt><tt class="py-name">shutdown</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L198"></a><tt class="py-lineno">198</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_accumulatorServer</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L199"></a><tt class="py-lineno">199</tt> <tt class="py-line"> <tt class="py-keyword">with</tt> <tt id="link-92" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-92', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-93" class="py-name"><a title="pyspark.context.SparkContext._lock" class="py-name" href="#" onclick="return doclink('link-93', '_lock', 'link-29');">_lock</a></tt><tt class="py-op">:</tt> </tt>
<a name="L200"></a><tt class="py-lineno">200</tt> <tt class="py-line"> <tt id="link-94" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-94', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-95" class="py-name"><a title="pyspark.context.SparkContext._active_spark_context" class="py-name" href="#" onclick="return doclink('link-95', '_active_spark_context', 'link-28');">_active_spark_context</a></tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
</div><a name="L201"></a><tt class="py-lineno">201</tt> <tt class="py-line"> </tt>
<a name="SparkContext.parallelize"></a><div id="SparkContext.parallelize-def"><a name="L202"></a><tt class="py-lineno">202</tt> <a class="py-toggle" href="#" id="SparkContext.parallelize-toggle" onclick="return toggle('SparkContext.parallelize');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#parallelize">parallelize</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">c</tt><tt class="py-op">,</tt> <tt class="py-param">numSlices</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.parallelize-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.parallelize-expanded"><a name="L203"></a><tt class="py-lineno">203</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L204"></a><tt class="py-lineno">204</tt> <tt class="py-line"><tt class="py-docstring"> Distribute a local Python collection to form an RDD.</tt> </tt>
<a name="L205"></a><tt class="py-lineno">205</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L206"></a><tt class="py-lineno">206</tt> <tt class="py-line"><tt class="py-docstring"> >>> sc.parallelize(range(5), 5).glom().collect()</tt> </tt>
<a name="L207"></a><tt class="py-lineno">207</tt> <tt class="py-line"><tt class="py-docstring"> [[0], [1], [2], [3], [4]]</tt> </tt>
<a name="L208"></a><tt class="py-lineno">208</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L209"></a><tt class="py-lineno">209</tt> <tt class="py-line"> <tt class="py-name">numSlices</tt> <tt class="py-op">=</tt> <tt class="py-name">numSlices</tt> <tt class="py-keyword">or</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-96" class="py-name"><a title="pyspark.context.SparkContext.defaultParallelism" class="py-name" href="#" onclick="return doclink('link-96', 'defaultParallelism', 'link-89');">defaultParallelism</a></tt> </tt>
<a name="L210"></a><tt class="py-lineno">210</tt> <tt class="py-line"> <tt class="py-comment"># Calling the Java parallelize() method with an ArrayList is too slow,</tt> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt> <tt class="py-line"> <tt class="py-comment"># because it sends O(n) Py4J commands. As an alternative, serialized</tt> </tt>
<a name="L212"></a><tt class="py-lineno">212</tt> <tt class="py-line"> <tt class="py-comment"># objects are written to a file and loaded through textFile().</tt> </tt>
<a name="L213"></a><tt class="py-lineno">213</tt> <tt class="py-line"> <tt class="py-name">tempFile</tt> <tt class="py-op">=</tt> <tt class="py-name">NamedTemporaryFile</tt><tt class="py-op">(</tt><tt class="py-name">delete</tt><tt class="py-op">=</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">dir</tt><tt class="py-op">=</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_temp_dir</tt><tt class="py-op">)</tt> </tt>
<a name="L214"></a><tt class="py-lineno">214</tt> <tt class="py-line"> <tt class="py-comment"># Make sure we distribute data evenly if it's smaller than self.batchSize</tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-string">"__len__"</tt> <tt class="py-keyword">not</tt> <tt class="py-keyword">in</tt> <tt class="py-name">dir</tt><tt class="py-op">(</tt><tt class="py-name">c</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L216"></a><tt class="py-lineno">216</tt> <tt class="py-line"> <tt class="py-name">c</tt> <tt class="py-op">=</tt> <tt class="py-name">list</tt><tt class="py-op">(</tt><tt class="py-name">c</tt><tt class="py-op">)</tt> <tt class="py-comment"># Make it a list so we can compute its length</tt> </tt>
<a name="L217"></a><tt class="py-lineno">217</tt> <tt class="py-line"> <tt class="py-name">batchSize</tt> <tt class="py-op">=</tt> <tt class="py-name">min</tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">c</tt><tt class="py-op">)</tt> <tt class="py-op">//</tt> <tt class="py-name">numSlices</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_batchSize</tt><tt class="py-op">)</tt> </tt>
<a name="L218"></a><tt class="py-lineno">218</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">batchSize</tt> <tt class="py-op">></tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L219"></a><tt class="py-lineno">219</tt> <tt class="py-line"> <tt class="py-name">serializer</tt> <tt class="py-op">=</tt> <tt class="py-name">BatchedSerializer</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_unbatched_serializer</tt><tt class="py-op">,</tt> </tt>
<a name="L220"></a><tt class="py-lineno">220</tt> <tt class="py-line"> <tt class="py-name">batchSize</tt><tt class="py-op">)</tt> </tt>
<a name="L221"></a><tt class="py-lineno">221</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L222"></a><tt class="py-lineno">222</tt> <tt class="py-line"> <tt class="py-name">serializer</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_unbatched_serializer</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt> <tt class="py-line"> <tt class="py-name">serializer</tt><tt class="py-op">.</tt><tt class="py-name">dump_stream</tt><tt class="py-op">(</tt><tt class="py-name">c</tt><tt class="py-op">,</tt> <tt class="py-name">tempFile</tt><tt class="py-op">)</tt> </tt>
<a name="L224"></a><tt class="py-lineno">224</tt> <tt class="py-line"> <tt class="py-name">tempFile</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L225"></a><tt class="py-lineno">225</tt> <tt class="py-line"> <tt class="py-name">readRDDFromFile</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-97" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-97', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">PythonRDD</tt><tt class="py-op">.</tt><tt class="py-name">readRDDFromFile</tt> </tt>
<a name="L226"></a><tt class="py-lineno">226</tt> <tt class="py-line"> <tt class="py-name">jrdd</tt> <tt class="py-op">=</tt> <tt class="py-name">readRDDFromFile</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">,</tt> <tt class="py-name">tempFile</tt><tt class="py-op">.</tt><tt class="py-name">name</tt><tt class="py-op">,</tt> <tt class="py-name">numSlices</tt><tt class="py-op">)</tt> </tt>
<a name="L227"></a><tt class="py-lineno">227</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-98" class="py-name"><a title="pyspark.rdd.RDD" class="py-name" href="#" onclick="return doclink('link-98', 'RDD', 'link-23');">RDD</a></tt><tt class="py-op">(</tt><tt class="py-name">jrdd</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">serializer</tt><tt class="py-op">)</tt> </tt>
</div><a name="L228"></a><tt class="py-lineno">228</tt> <tt class="py-line"> </tt>
<a name="SparkContext.textFile"></a><div id="SparkContext.textFile-def"><a name="L229"></a><tt class="py-lineno">229</tt> <a class="py-toggle" href="#" id="SparkContext.textFile-toggle" onclick="return toggle('SparkContext.textFile');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#textFile">textFile</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">name</tt><tt class="py-op">,</tt> <tt class="py-param">minSplits</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.textFile-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.textFile-expanded"><a name="L230"></a><tt class="py-lineno">230</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L231"></a><tt class="py-lineno">231</tt> <tt class="py-line"><tt class="py-docstring"> Read a text file from HDFS, a local file system (available on all</tt> </tt>
<a name="L232"></a><tt class="py-lineno">232</tt> <tt class="py-line"><tt class="py-docstring"> nodes), or any Hadoop-supported file system URI, and return it as an</tt> </tt>
<a name="L233"></a><tt class="py-lineno">233</tt> <tt class="py-line"><tt class="py-docstring"> RDD of Strings.</tt> </tt>
<a name="L234"></a><tt class="py-lineno">234</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt> <tt class="py-line"> <tt class="py-name">minSplits</tt> <tt class="py-op">=</tt> <tt class="py-name">minSplits</tt> <tt class="py-keyword">or</tt> <tt class="py-name">min</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-99" class="py-name"><a title="pyspark.context.SparkContext.defaultParallelism" class="py-name" href="#" onclick="return doclink('link-99', 'defaultParallelism', 'link-89');">defaultParallelism</a></tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-100" class="py-name"><a title="pyspark.rdd.RDD" class="py-name" href="#" onclick="return doclink('link-100', 'RDD', 'link-23');">RDD</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt id="link-101" class="py-name" targets="Method pyspark.context.SparkContext.textFile()=pyspark.context.SparkContext-class.html#textFile"><a title="pyspark.context.SparkContext.textFile" class="py-name" href="#" onclick="return doclink('link-101', 'textFile', 'link-101');">textFile</a></tt><tt class="py-op">(</tt><tt class="py-name">name</tt><tt class="py-op">,</tt> <tt class="py-name">minSplits</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt> <tt class="py-line"> <tt class="py-name">UTF8Deserializer</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
</div><a name="L238"></a><tt class="py-lineno">238</tt> <tt class="py-line"> </tt>
<a name="SparkContext._checkpointFile"></a><div id="SparkContext._checkpointFile-def"><a name="L239"></a><tt class="py-lineno">239</tt> <a class="py-toggle" href="#" id="SparkContext._checkpointFile-toggle" onclick="return toggle('SparkContext._checkpointFile');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#_checkpointFile">_checkpointFile</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">name</tt><tt class="py-op">,</tt> <tt class="py-param">input_deserializer</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext._checkpointFile-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext._checkpointFile-expanded"><a name="L240"></a><tt class="py-lineno">240</tt> <tt class="py-line"> <tt class="py-name">jrdd</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">checkpointFile</tt><tt class="py-op">(</tt><tt class="py-name">name</tt><tt class="py-op">)</tt> </tt>
<a name="L241"></a><tt class="py-lineno">241</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-102" class="py-name"><a title="pyspark.rdd.RDD" class="py-name" href="#" onclick="return doclink('link-102', 'RDD', 'link-23');">RDD</a></tt><tt class="py-op">(</tt><tt class="py-name">jrdd</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">input_deserializer</tt><tt class="py-op">)</tt> </tt>
</div><a name="L242"></a><tt class="py-lineno">242</tt> <tt class="py-line"> </tt>
<a name="SparkContext.union"></a><div id="SparkContext.union-def"><a name="L243"></a><tt class="py-lineno">243</tt> <a class="py-toggle" href="#" id="SparkContext.union-toggle" onclick="return toggle('SparkContext.union');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#union">union</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">rdds</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.union-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.union-expanded"><a name="L244"></a><tt class="py-lineno">244</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt> <tt class="py-line"><tt class="py-docstring"> Build the union of a list of RDDs.</tt> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L247"></a><tt class="py-lineno">247</tt> <tt class="py-line"><tt class="py-docstring"> This supports unions() of RDDs with different serialized formats,</tt> </tt>
<a name="L248"></a><tt class="py-lineno">248</tt> <tt class="py-line"><tt class="py-docstring"> although this forces them to be reserialized using the default</tt> </tt>
<a name="L249"></a><tt class="py-lineno">249</tt> <tt class="py-line"><tt class="py-docstring"> serializer:</tt> </tt>
<a name="L250"></a><tt class="py-lineno">250</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L251"></a><tt class="py-lineno">251</tt> <tt class="py-line"><tt class="py-docstring"> >>> path = os.path.join(tempdir, "union-text.txt")</tt> </tt>
<a name="L252"></a><tt class="py-lineno">252</tt> <tt class="py-line"><tt class="py-docstring"> >>> with open(path, "w") as testFile:</tt> </tt>
<a name="L253"></a><tt class="py-lineno">253</tt> <tt class="py-line"><tt class="py-docstring"> ... testFile.write("Hello")</tt> </tt>
<a name="L254"></a><tt class="py-lineno">254</tt> <tt class="py-line"><tt class="py-docstring"> >>> textFile = sc.textFile(path)</tt> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt> <tt class="py-line"><tt class="py-docstring"> >>> textFile.collect()</tt> </tt>
<a name="L256"></a><tt class="py-lineno">256</tt> <tt class="py-line"><tt class="py-docstring"> [u'Hello']</tt> </tt>
<a name="L257"></a><tt class="py-lineno">257</tt> <tt class="py-line"><tt class="py-docstring"> >>> parallelized = sc.parallelize(["World!"])</tt> </tt>
<a name="L258"></a><tt class="py-lineno">258</tt> <tt class="py-line"><tt class="py-docstring"> >>> sorted(sc.union([textFile, parallelized]).collect())</tt> </tt>
<a name="L259"></a><tt class="py-lineno">259</tt> <tt class="py-line"><tt class="py-docstring"> [u'Hello', 'World!']</tt> </tt>
<a name="L260"></a><tt class="py-lineno">260</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L261"></a><tt class="py-lineno">261</tt> <tt class="py-line"> <tt class="py-name">first_jrdd_deserializer</tt> <tt class="py-op">=</tt> <tt class="py-name">rdds</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">_jrdd_deserializer</tt> </tt>
<a name="L262"></a><tt class="py-lineno">262</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">any</tt><tt class="py-op">(</tt><tt class="py-name">x</tt><tt class="py-op">.</tt><tt class="py-name">_jrdd_deserializer</tt> <tt class="py-op">!=</tt> <tt class="py-name">first_jrdd_deserializer</tt> <tt class="py-keyword">for</tt> <tt class="py-name">x</tt> <tt class="py-keyword">in</tt> <tt class="py-name">rdds</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L263"></a><tt class="py-lineno">263</tt> <tt class="py-line"> <tt class="py-name">rdds</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">x</tt><tt class="py-op">.</tt><tt class="py-name">_reserialize</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">x</tt> <tt class="py-keyword">in</tt> <tt class="py-name">rdds</tt><tt class="py-op">]</tt> </tt>
<a name="L264"></a><tt class="py-lineno">264</tt> <tt class="py-line"> <tt id="link-103" class="py-name" targets="Method pyspark.rdd.RDD.first()=pyspark.rdd.RDD-class.html#first"><a title="pyspark.rdd.RDD.first" class="py-name" href="#" onclick="return doclink('link-103', 'first', 'link-103');">first</a></tt> <tt class="py-op">=</tt> <tt class="py-name">rdds</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">_jrdd</tt> </tt>
<a name="L265"></a><tt class="py-lineno">265</tt> <tt class="py-line"> <tt class="py-name">rest</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">x</tt><tt class="py-op">.</tt><tt class="py-name">_jrdd</tt> <tt class="py-keyword">for</tt> <tt class="py-name">x</tt> <tt class="py-keyword">in</tt> <tt class="py-name">rdds</tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">:</tt><tt class="py-op">]</tt><tt class="py-op">]</tt> </tt>
<a name="L266"></a><tt class="py-lineno">266</tt> <tt class="py-line"> <tt class="py-name">rest</tt> <tt class="py-op">=</tt> <tt class="py-name">ListConverter</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">convert</tt><tt class="py-op">(</tt><tt class="py-name">rest</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-104" class="py-name"><a title="pyspark.context.SparkContext._gateway" class="py-name" href="#" onclick="return doclink('link-104', '_gateway', 'link-24');">_gateway</a></tt><tt class="py-op">.</tt><tt class="py-name">_gateway_client</tt><tt class="py-op">)</tt> </tt>
<a name="L267"></a><tt class="py-lineno">267</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-105" class="py-name"><a title="pyspark.rdd.RDD" class="py-name" href="#" onclick="return doclink('link-105', 'RDD', 'link-23');">RDD</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt id="link-106" class="py-name" targets="Method pyspark.context.SparkContext.union()=pyspark.context.SparkContext-class.html#union,Method pyspark.rdd.RDD.union()=pyspark.rdd.RDD-class.html#union"><a title="pyspark.context.SparkContext.union
pyspark.rdd.RDD.union" class="py-name" href="#" onclick="return doclink('link-106', 'union', 'link-106');">union</a></tt><tt class="py-op">(</tt><tt id="link-107" class="py-name"><a title="pyspark.rdd.RDD.first" class="py-name" href="#" onclick="return doclink('link-107', 'first', 'link-103');">first</a></tt><tt class="py-op">,</tt> <tt class="py-name">rest</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">,</tt> </tt>
<a name="L268"></a><tt class="py-lineno">268</tt> <tt class="py-line"> <tt class="py-name">rdds</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">_jrdd_deserializer</tt><tt class="py-op">)</tt> </tt>
</div><a name="L269"></a><tt class="py-lineno">269</tt> <tt class="py-line"> </tt>
<a name="SparkContext.broadcast"></a><div id="SparkContext.broadcast-def"><a name="L270"></a><tt class="py-lineno">270</tt> <a class="py-toggle" href="#" id="SparkContext.broadcast-toggle" onclick="return toggle('SparkContext.broadcast');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#broadcast">broadcast</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">value</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.broadcast-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.broadcast-expanded"><a name="L271"></a><tt class="py-lineno">271</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L272"></a><tt class="py-lineno">272</tt> <tt class="py-line"><tt class="py-docstring"> Broadcast a read-only variable to the cluster, returning a</tt> </tt>
<a name="L273"></a><tt class="py-lineno">273</tt> <tt class="py-line"><tt class="py-docstring"> L{Broadcast<pyspark.broadcast.Broadcast>}</tt> </tt>
<a name="L274"></a><tt class="py-lineno">274</tt> <tt class="py-line"><tt class="py-docstring"> object for reading it in distributed functions. The variable will be</tt> </tt>
<a name="L275"></a><tt class="py-lineno">275</tt> <tt class="py-line"><tt class="py-docstring"> sent to each cluster only once.</tt> </tt>
<a name="L276"></a><tt class="py-lineno">276</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L277"></a><tt class="py-lineno">277</tt> <tt class="py-line"> <tt id="link-108" class="py-name" targets="Variable pyspark.accumulators.pickleSer=pyspark.accumulators-module.html#pickleSer"><a title="pyspark.accumulators.pickleSer" class="py-name" href="#" onclick="return doclink('link-108', 'pickleSer', 'link-108');">pickleSer</a></tt> <tt class="py-op">=</tt> <tt id="link-109" class="py-name"><a title="pyspark.serializers.PickleSerializer" class="py-name" href="#" onclick="return doclink('link-109', 'PickleSerializer', 'link-17');">PickleSerializer</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L278"></a><tt class="py-lineno">278</tt> <tt class="py-line"> <tt class="py-name">pickled</tt> <tt class="py-op">=</tt> <tt id="link-110" class="py-name"><a title="pyspark.accumulators.pickleSer" class="py-name" href="#" onclick="return doclink('link-110', 'pickleSer', 'link-108');">pickleSer</a></tt><tt class="py-op">.</tt><tt id="link-111" class="py-name" targets="Variable pyspark.serializers.MarshalSerializer.dumps=pyspark.serializers.MarshalSerializer-class.html#dumps,Method pyspark.serializers.PickleSerializer.dumps()=pyspark.serializers.PickleSerializer-class.html#dumps"><a title="pyspark.serializers.MarshalSerializer.dumps
pyspark.serializers.PickleSerializer.dumps" class="py-name" href="#" onclick="return doclink('link-111', 'dumps', 'link-111');">dumps</a></tt><tt class="py-op">(</tt><tt id="link-112" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-112', 'value', 'link-40');">value</a></tt><tt class="py-op">)</tt> </tt>
<a name="L279"></a><tt class="py-lineno">279</tt> <tt class="py-line"> <tt class="py-name">jbroadcast</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt id="link-113" class="py-name"><a title="pyspark.broadcast
pyspark.context.SparkContext.broadcast" class="py-name" href="#" onclick="return doclink('link-113', 'broadcast', 'link-6');">broadcast</a></tt><tt class="py-op">(</tt><tt class="py-name">bytearray</tt><tt class="py-op">(</tt><tt class="py-name">pickled</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L280"></a><tt class="py-lineno">280</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-114" class="py-name"><a title="pyspark.broadcast.Broadcast" class="py-name" href="#" onclick="return doclink('link-114', 'Broadcast', 'link-7');">Broadcast</a></tt><tt class="py-op">(</tt><tt class="py-name">jbroadcast</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt id="link-115" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-115', 'value', 'link-40');">value</a></tt><tt class="py-op">,</tt> <tt class="py-name">jbroadcast</tt><tt class="py-op">,</tt> </tt>
<a name="L281"></a><tt class="py-lineno">281</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_pickled_broadcast_vars</tt><tt class="py-op">)</tt> </tt>
</div><a name="L282"></a><tt class="py-lineno">282</tt> <tt class="py-line"> </tt>
<a name="SparkContext.accumulator"></a><div id="SparkContext.accumulator-def"><a name="L283"></a><tt class="py-lineno">283</tt> <a class="py-toggle" href="#" id="SparkContext.accumulator-toggle" onclick="return toggle('SparkContext.accumulator');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#accumulator">accumulator</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">value</tt><tt class="py-op">,</tt> <tt class="py-param">accum_param</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.accumulator-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.accumulator-expanded"><a name="L284"></a><tt class="py-lineno">284</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L285"></a><tt class="py-lineno">285</tt> <tt class="py-line"><tt class="py-docstring"> Create an L{Accumulator} with the given initial value, using a given</tt> </tt>
<a name="L286"></a><tt class="py-lineno">286</tt> <tt class="py-line"><tt class="py-docstring"> L{AccumulatorParam} helper object to define how to add values of the</tt> </tt>
<a name="L287"></a><tt class="py-lineno">287</tt> <tt class="py-line"><tt class="py-docstring"> data type if provided. Default AccumulatorParams are used for integers</tt> </tt>
<a name="L288"></a><tt class="py-lineno">288</tt> <tt class="py-line"><tt class="py-docstring"> and floating-point numbers if you do not provide one. For other types,</tt> </tt>
<a name="L289"></a><tt class="py-lineno">289</tt> <tt class="py-line"><tt class="py-docstring"> a custom AccumulatorParam can be used.</tt> </tt>
<a name="L290"></a><tt class="py-lineno">290</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L291"></a><tt class="py-lineno">291</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">accum_param</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L292"></a><tt class="py-lineno">292</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt id="link-116" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-116', 'value', 'link-40');">value</a></tt><tt class="py-op">,</tt> <tt class="py-name">int</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L293"></a><tt class="py-lineno">293</tt> <tt class="py-line"> <tt class="py-name">accum_param</tt> <tt class="py-op">=</tt> <tt id="link-117" class="py-name"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-117', 'accumulators', 'link-1');">accumulators</a></tt><tt class="py-op">.</tt><tt id="link-118" class="py-name" targets="Variable pyspark.accumulators.INT_ACCUMULATOR_PARAM=pyspark.accumulators-module.html#INT_ACCUMULATOR_PARAM"><a title="pyspark.accumulators.INT_ACCUMULATOR_PARAM" class="py-name" href="#" onclick="return doclink('link-118', 'INT_ACCUMULATOR_PARAM', 'link-118');">INT_ACCUMULATOR_PARAM</a></tt> </tt>
<a name="L294"></a><tt class="py-lineno">294</tt> <tt class="py-line"> <tt class="py-keyword">elif</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt id="link-119" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-119', 'value', 'link-40');">value</a></tt><tt class="py-op">,</tt> <tt class="py-name">float</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L295"></a><tt class="py-lineno">295</tt> <tt class="py-line"> <tt class="py-name">accum_param</tt> <tt class="py-op">=</tt> <tt id="link-120" class="py-name"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-120', 'accumulators', 'link-1');">accumulators</a></tt><tt class="py-op">.</tt><tt id="link-121" class="py-name" targets="Variable pyspark.accumulators.FLOAT_ACCUMULATOR_PARAM=pyspark.accumulators-module.html#FLOAT_ACCUMULATOR_PARAM"><a title="pyspark.accumulators.FLOAT_ACCUMULATOR_PARAM" class="py-name" href="#" onclick="return doclink('link-121', 'FLOAT_ACCUMULATOR_PARAM', 'link-121');">FLOAT_ACCUMULATOR_PARAM</a></tt> </tt>
<a name="L296"></a><tt class="py-lineno">296</tt> <tt class="py-line"> <tt class="py-keyword">elif</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt id="link-122" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-122', 'value', 'link-40');">value</a></tt><tt class="py-op">,</tt> <tt class="py-name">complex</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L297"></a><tt class="py-lineno">297</tt> <tt class="py-line"> <tt class="py-name">accum_param</tt> <tt class="py-op">=</tt> <tt id="link-123" class="py-name"><a title="pyspark.accumulators" class="py-name" href="#" onclick="return doclink('link-123', 'accumulators', 'link-1');">accumulators</a></tt><tt class="py-op">.</tt><tt id="link-124" class="py-name" targets="Variable pyspark.accumulators.COMPLEX_ACCUMULATOR_PARAM=pyspark.accumulators-module.html#COMPLEX_ACCUMULATOR_PARAM"><a title="pyspark.accumulators.COMPLEX_ACCUMULATOR_PARAM" class="py-name" href="#" onclick="return doclink('link-124', 'COMPLEX_ACCUMULATOR_PARAM', 'link-124');">COMPLEX_ACCUMULATOR_PARAM</a></tt> </tt>
<a name="L298"></a><tt class="py-lineno">298</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L299"></a><tt class="py-lineno">299</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">Exception</tt><tt class="py-op">(</tt><tt class="py-string">"No default accumulator param for type %s"</tt> <tt class="py-op">%</tt> <tt class="py-name">type</tt><tt class="py-op">(</tt><tt id="link-125" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-125', 'value', 'link-40');">value</a></tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L300"></a><tt class="py-lineno">300</tt> <tt class="py-line"> <tt id="link-126" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-126', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-127" class="py-name"><a title="pyspark.context.SparkContext._next_accum_id" class="py-name" href="#" onclick="return doclink('link-127', '_next_accum_id', 'link-27');">_next_accum_id</a></tt> <tt class="py-op">+=</tt> <tt class="py-number">1</tt> </tt>
<a name="L301"></a><tt class="py-lineno">301</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-128" class="py-name"><a title="pyspark.accumulators.Accumulator" class="py-name" href="#" onclick="return doclink('link-128', 'Accumulator', 'link-4');">Accumulator</a></tt><tt class="py-op">(</tt><tt id="link-129" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-129', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">.</tt><tt id="link-130" class="py-name"><a title="pyspark.context.SparkContext._next_accum_id" class="py-name" href="#" onclick="return doclink('link-130', '_next_accum_id', 'link-27');">_next_accum_id</a></tt> <tt class="py-op">-</tt> <tt class="py-number">1</tt><tt class="py-op">,</tt> <tt id="link-131" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-131', 'value', 'link-40');">value</a></tt><tt class="py-op">,</tt> <tt class="py-name">accum_param</tt><tt class="py-op">)</tt> </tt>
</div><a name="L302"></a><tt class="py-lineno">302</tt> <tt class="py-line"> </tt>
<a name="SparkContext.addFile"></a><div id="SparkContext.addFile-def"><a name="L303"></a><tt class="py-lineno">303</tt> <a class="py-toggle" href="#" id="SparkContext.addFile-toggle" onclick="return toggle('SparkContext.addFile');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#addFile">addFile</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">path</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.addFile-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.addFile-expanded"><a name="L304"></a><tt class="py-lineno">304</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L305"></a><tt class="py-lineno">305</tt> <tt class="py-line"><tt class="py-docstring"> Add a file to be downloaded with this Spark job on every node.</tt> </tt>
<a name="L306"></a><tt class="py-lineno">306</tt> <tt class="py-line"><tt class="py-docstring"> The C{path} passed can be either a local file, a file in HDFS</tt> </tt>
<a name="L307"></a><tt class="py-lineno">307</tt> <tt class="py-line"><tt class="py-docstring"> (or other Hadoop-supported filesystems), or an HTTP, HTTPS or</tt> </tt>
<a name="L308"></a><tt class="py-lineno">308</tt> <tt class="py-line"><tt class="py-docstring"> FTP URI.</tt> </tt>
<a name="L309"></a><tt class="py-lineno">309</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L310"></a><tt class="py-lineno">310</tt> <tt class="py-line"><tt class="py-docstring"> To access the file in Spark jobs, use</tt> </tt>
<a name="L311"></a><tt class="py-lineno">311</tt> <tt class="py-line"><tt class="py-docstring"> L{SparkFiles.get(path)<pyspark.files.SparkFiles.get>} to find its</tt> </tt>
<a name="L312"></a><tt class="py-lineno">312</tt> <tt class="py-line"><tt class="py-docstring"> download location.</tt> </tt>
<a name="L313"></a><tt class="py-lineno">313</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L314"></a><tt class="py-lineno">314</tt> <tt class="py-line"><tt class="py-docstring"> >>> from pyspark import SparkFiles</tt> </tt>
<a name="L315"></a><tt class="py-lineno">315</tt> <tt class="py-line"><tt class="py-docstring"> >>> path = os.path.join(tempdir, "test.txt")</tt> </tt>
<a name="L316"></a><tt class="py-lineno">316</tt> <tt class="py-line"><tt class="py-docstring"> >>> with open(path, "w") as testFile:</tt> </tt>
<a name="L317"></a><tt class="py-lineno">317</tt> <tt class="py-line"><tt class="py-docstring"> ... testFile.write("100")</tt> </tt>
<a name="L318"></a><tt class="py-lineno">318</tt> <tt class="py-line"><tt class="py-docstring"> >>> sc.addFile(path)</tt> </tt>
<a name="L319"></a><tt class="py-lineno">319</tt> <tt class="py-line"><tt class="py-docstring"> >>> def func(iterator):</tt> </tt>
<a name="L320"></a><tt class="py-lineno">320</tt> <tt class="py-line"><tt class="py-docstring"> ... with open(SparkFiles.get("test.txt")) as testFile:</tt> </tt>
<a name="L321"></a><tt class="py-lineno">321</tt> <tt class="py-line"><tt class="py-docstring"> ... fileVal = int(testFile.readline())</tt> </tt>
<a name="L322"></a><tt class="py-lineno">322</tt> <tt class="py-line"><tt class="py-docstring"> ... return [x * 100 for x in iterator]</tt> </tt>
<a name="L323"></a><tt class="py-lineno">323</tt> <tt class="py-line"><tt class="py-docstring"> >>> sc.parallelize([1, 2, 3, 4]).mapPartitions(func).collect()</tt> </tt>
<a name="L324"></a><tt class="py-lineno">324</tt> <tt class="py-line"><tt class="py-docstring"> [100, 200, 300, 400]</tt> </tt>
<a name="L325"></a><tt class="py-lineno">325</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L326"></a><tt class="py-lineno">326</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">sc</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-132" class="py-name" targets="Method pyspark.context.SparkContext.addFile()=pyspark.context.SparkContext-class.html#addFile"><a title="pyspark.context.SparkContext.addFile" class="py-name" href="#" onclick="return doclink('link-132', 'addFile', 'link-132');">addFile</a></tt><tt class="py-op">(</tt><tt class="py-name">path</tt><tt class="py-op">)</tt> </tt>
</div><a name="L327"></a><tt class="py-lineno">327</tt> <tt class="py-line"> </tt>
<a name="SparkContext.clearFiles"></a><div id="SparkContext.clearFiles-def"><a name="L328"></a><tt class="py-lineno">328</tt> <a class="py-toggle" href="#" id="SparkContext.clearFiles-toggle" onclick="return toggle('SparkContext.clearFiles');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#clearFiles">clearFiles</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.clearFiles-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.clearFiles-expanded"><a name="L329"></a><tt class="py-lineno">329</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L330"></a><tt class="py-lineno">330</tt> <tt class="py-line"><tt class="py-docstring"> Clear the job's list of files added by L{addFile} or L{addPyFile} so</tt> </tt>
<a name="L331"></a><tt class="py-lineno">331</tt> <tt class="py-line"><tt class="py-docstring"> that they do not get downloaded to any new nodes.</tt> </tt>
<a name="L332"></a><tt class="py-lineno">332</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L333"></a><tt class="py-lineno">333</tt> <tt class="py-line"> <tt class="py-comment"># TODO: remove added .py or .zip files from the PYTHONPATH?</tt> </tt>
<a name="L334"></a><tt class="py-lineno">334</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">sc</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-133" class="py-name" targets="Method pyspark.context.SparkContext.clearFiles()=pyspark.context.SparkContext-class.html#clearFiles"><a title="pyspark.context.SparkContext.clearFiles" class="py-name" href="#" onclick="return doclink('link-133', 'clearFiles', 'link-133');">clearFiles</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L335"></a><tt class="py-lineno">335</tt> <tt class="py-line"> </tt>
<a name="SparkContext.addPyFile"></a><div id="SparkContext.addPyFile-def"><a name="L336"></a><tt class="py-lineno">336</tt> <a class="py-toggle" href="#" id="SparkContext.addPyFile-toggle" onclick="return toggle('SparkContext.addPyFile');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#addPyFile">addPyFile</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">path</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.addPyFile-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.addPyFile-expanded"><a name="L337"></a><tt class="py-lineno">337</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L338"></a><tt class="py-lineno">338</tt> <tt class="py-line"><tt class="py-docstring"> Add a .py or .zip dependency for all tasks to be executed on this</tt> </tt>
<a name="L339"></a><tt class="py-lineno">339</tt> <tt class="py-line"><tt class="py-docstring"> SparkContext in the future. The C{path} passed can be either a local</tt> </tt>
<a name="L340"></a><tt class="py-lineno">340</tt> <tt class="py-line"><tt class="py-docstring"> file, a file in HDFS (or other Hadoop-supported filesystems), or an</tt> </tt>
<a name="L341"></a><tt class="py-lineno">341</tt> <tt class="py-line"><tt class="py-docstring"> HTTP, HTTPS or FTP URI.</tt> </tt>
<a name="L342"></a><tt class="py-lineno">342</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L343"></a><tt class="py-lineno">343</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-134" class="py-name"><a title="pyspark.context.SparkContext.addFile" class="py-name" href="#" onclick="return doclink('link-134', 'addFile', 'link-132');">addFile</a></tt><tt class="py-op">(</tt><tt class="py-name">path</tt><tt class="py-op">)</tt> </tt>
<a name="L344"></a><tt class="py-lineno">344</tt> <tt class="py-line"> <tt class="py-op">(</tt><tt class="py-name">dirname</tt><tt class="py-op">,</tt> <tt class="py-name">filename</tt><tt class="py-op">)</tt> <tt class="py-op">=</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-name">path</tt><tt class="py-op">)</tt> <tt class="py-comment"># dirname may be directory or HDFS/S3 prefix</tt> </tt>
<a name="L345"></a><tt class="py-lineno">345</tt> <tt class="py-line"> </tt>
<a name="L346"></a><tt class="py-lineno">346</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">filename</tt><tt class="py-op">.</tt><tt class="py-name">endswith</tt><tt class="py-op">(</tt><tt class="py-string">'.zip'</tt><tt class="py-op">)</tt> <tt class="py-keyword">or</tt> <tt class="py-name">filename</tt><tt class="py-op">.</tt><tt class="py-name">endswith</tt><tt class="py-op">(</tt><tt class="py-string">'.ZIP'</tt><tt class="py-op">)</tt> <tt class="py-keyword">or</tt> <tt class="py-name">filename</tt><tt class="py-op">.</tt><tt class="py-name">endswith</tt><tt class="py-op">(</tt><tt class="py-string">'.egg'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L347"></a><tt class="py-lineno">347</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-135" class="py-name"><a title="pyspark.context.SparkContext._python_includes" class="py-name" href="#" onclick="return doclink('link-135', '_python_includes', 'link-30');">_python_includes</a></tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">filename</tt><tt class="py-op">)</tt> </tt>
<a name="L348"></a><tt class="py-lineno">348</tt> <tt class="py-line"> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt id="link-136" class="py-name" targets="Method pyspark.rdd.RDD.join()=pyspark.rdd.RDD-class.html#join"><a title="pyspark.rdd.RDD.join" class="py-name" href="#" onclick="return doclink('link-136', 'join', 'link-136');">join</a></tt><tt class="py-op">(</tt><tt id="link-137" class="py-name"><a title="pyspark.files.SparkFiles" class="py-name" href="#" onclick="return doclink('link-137', 'SparkFiles', 'link-13');">SparkFiles</a></tt><tt class="py-op">.</tt><tt id="link-138" class="py-name"><a title="pyspark.files.SparkFiles.getRootDirectory" class="py-name" href="#" onclick="return doclink('link-138', 'getRootDirectory', 'link-59');">getRootDirectory</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">filename</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-comment"># for tests in local mode</tt> </tt>
</div><a name="L349"></a><tt class="py-lineno">349</tt> <tt class="py-line"> </tt>
<a name="SparkContext.setCheckpointDir"></a><div id="SparkContext.setCheckpointDir-def"><a name="L350"></a><tt class="py-lineno">350</tt> <a class="py-toggle" href="#" id="SparkContext.setCheckpointDir-toggle" onclick="return toggle('SparkContext.setCheckpointDir');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#setCheckpointDir">setCheckpointDir</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">dirName</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext.setCheckpointDir-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext.setCheckpointDir-expanded"><a name="L351"></a><tt class="py-lineno">351</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L352"></a><tt class="py-lineno">352</tt> <tt class="py-line"><tt class="py-docstring"> Set the directory under which RDDs are going to be checkpointed. The</tt> </tt>
<a name="L353"></a><tt class="py-lineno">353</tt> <tt class="py-line"><tt class="py-docstring"> directory must be a HDFS path if running on a cluster.</tt> </tt>
<a name="L354"></a><tt class="py-lineno">354</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L355"></a><tt class="py-lineno">355</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jsc</tt><tt class="py-op">.</tt><tt class="py-name">sc</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-139" class="py-name" targets="Method pyspark.context.SparkContext.setCheckpointDir()=pyspark.context.SparkContext-class.html#setCheckpointDir"><a title="pyspark.context.SparkContext.setCheckpointDir" class="py-name" href="#" onclick="return doclink('link-139', 'setCheckpointDir', 'link-139');">setCheckpointDir</a></tt><tt class="py-op">(</tt><tt class="py-name">dirName</tt><tt class="py-op">)</tt> </tt>
</div><a name="L356"></a><tt class="py-lineno">356</tt> <tt class="py-line"> </tt>
<a name="SparkContext._getJavaStorageLevel"></a><div id="SparkContext._getJavaStorageLevel-def"><a name="L357"></a><tt class="py-lineno">357</tt> <a class="py-toggle" href="#" id="SparkContext._getJavaStorageLevel-toggle" onclick="return toggle('SparkContext._getJavaStorageLevel');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context.SparkContext-class.html#_getJavaStorageLevel">_getJavaStorageLevel</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">storageLevel</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SparkContext._getJavaStorageLevel-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SparkContext._getJavaStorageLevel-expanded"><a name="L358"></a><tt class="py-lineno">358</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L359"></a><tt class="py-lineno">359</tt> <tt class="py-line"><tt class="py-docstring"> Returns a Java StorageLevel based on a pyspark.StorageLevel.</tt> </tt>
<a name="L360"></a><tt class="py-lineno">360</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L361"></a><tt class="py-lineno">361</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt class="py-name">storageLevel</tt><tt class="py-op">,</tt> <tt id="link-140" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-140', 'StorageLevel', 'link-20');">StorageLevel</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L362"></a><tt class="py-lineno">362</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">Exception</tt><tt class="py-op">(</tt><tt class="py-string">"storageLevel must be of type pyspark.StorageLevel"</tt><tt class="py-op">)</tt> </tt>
<a name="L363"></a><tt class="py-lineno">363</tt> <tt class="py-line"> </tt>
<a name="L364"></a><tt class="py-lineno">364</tt> <tt class="py-line"> <tt class="py-name">newStorageLevel</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-141" class="py-name"><a title="pyspark.context.SparkContext._jvm" class="py-name" href="#" onclick="return doclink('link-141', '_jvm', 'link-25');">_jvm</a></tt><tt class="py-op">.</tt><tt class="py-name">org</tt><tt class="py-op">.</tt><tt class="py-name">apache</tt><tt class="py-op">.</tt><tt class="py-name">spark</tt><tt class="py-op">.</tt><tt class="py-name">storage</tt><tt class="py-op">.</tt><tt id="link-142" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-142', 'StorageLevel', 'link-20');">StorageLevel</a></tt> </tt>
<a name="L365"></a><tt class="py-lineno">365</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">newStorageLevel</tt><tt class="py-op">(</tt><tt class="py-name">storageLevel</tt><tt class="py-op">.</tt><tt class="py-name">useDisk</tt><tt class="py-op">,</tt> <tt class="py-name">storageLevel</tt><tt class="py-op">.</tt><tt class="py-name">useMemory</tt><tt class="py-op">,</tt> </tt>
<a name="L366"></a><tt class="py-lineno">366</tt> <tt class="py-line"> <tt class="py-name">storageLevel</tt><tt class="py-op">.</tt><tt class="py-name">deserialized</tt><tt class="py-op">,</tt> <tt class="py-name">storageLevel</tt><tt class="py-op">.</tt><tt class="py-name">replication</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L367"></a><tt class="py-lineno">367</tt> <tt class="py-line"> </tt>
<a name="_test"></a><div id="_test-def"><a name="L368"></a><tt class="py-lineno">368</tt> <a class="py-toggle" href="#" id="_test-toggle" onclick="return toggle('_test');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.context-module.html#_test">_test</a><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_test-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_test-expanded"><a name="L369"></a><tt class="py-lineno">369</tt> <tt class="py-line"> <tt class="py-keyword">import</tt> <tt class="py-name">atexit</tt> </tt>
<a name="L370"></a><tt class="py-lineno">370</tt> <tt class="py-line"> <tt class="py-keyword">import</tt> <tt class="py-name">doctest</tt> </tt>
<a name="L371"></a><tt class="py-lineno">371</tt> <tt class="py-line"> <tt class="py-keyword">import</tt> <tt class="py-name">tempfile</tt> </tt>
<a name="L372"></a><tt class="py-lineno">372</tt> <tt class="py-line"> <tt class="py-name">globs</tt> <tt class="py-op">=</tt> <tt class="py-name">globals</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-143" class="py-name" targets="Method pyspark.statcounter.StatCounter.copy()=pyspark.statcounter.StatCounter-class.html#copy"><a title="pyspark.statcounter.StatCounter.copy" class="py-name" href="#" onclick="return doclink('link-143', 'copy', 'link-143');">copy</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L373"></a><tt class="py-lineno">373</tt> <tt class="py-line"> <tt class="py-name">globs</tt><tt class="py-op">[</tt><tt class="py-string">'sc'</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt id="link-144" class="py-name"><a title="pyspark.context.SparkContext" class="py-name" href="#" onclick="return doclink('link-144', 'SparkContext', 'link-32');">SparkContext</a></tt><tt class="py-op">(</tt><tt class="py-string">'local[4]'</tt><tt class="py-op">,</tt> <tt class="py-string">'PythonTest'</tt><tt class="py-op">,</tt> <tt class="py-name">batchSize</tt><tt class="py-op">=</tt><tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L374"></a><tt class="py-lineno">374</tt> <tt class="py-line"> <tt class="py-name">globs</tt><tt class="py-op">[</tt><tt class="py-string">'tempdir'</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">tempfile</tt><tt class="py-op">.</tt><tt class="py-name">mkdtemp</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L375"></a><tt class="py-lineno">375</tt> <tt class="py-line"> <tt class="py-name">atexit</tt><tt class="py-op">.</tt><tt class="py-name">register</tt><tt class="py-op">(</tt><tt class="py-keyword">lambda</tt><tt class="py-op">:</tt> <tt class="py-name">shutil</tt><tt class="py-op">.</tt><tt class="py-name">rmtree</tt><tt class="py-op">(</tt><tt class="py-name">globs</tt><tt class="py-op">[</tt><tt class="py-string">'tempdir'</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L376"></a><tt class="py-lineno">376</tt> <tt class="py-line"> <tt class="py-op">(</tt><tt class="py-name">failure_count</tt><tt class="py-op">,</tt> <tt class="py-name">test_count</tt><tt class="py-op">)</tt> <tt class="py-op">=</tt> <tt class="py-name">doctest</tt><tt class="py-op">.</tt><tt class="py-name">testmod</tt><tt class="py-op">(</tt><tt class="py-name">globs</tt><tt class="py-op">=</tt><tt class="py-name">globs</tt><tt class="py-op">)</tt> </tt>
<a name="L377"></a><tt class="py-lineno">377</tt> <tt class="py-line"> <tt class="py-name">globs</tt><tt class="py-op">[</tt><tt class="py-string">'sc'</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt id="link-145" class="py-name"><a title="pyspark.context.SparkContext.stop" class="py-name" href="#" onclick="return doclink('link-145', 'stop', 'link-90');">stop</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L378"></a><tt class="py-lineno">378</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">failure_count</tt><tt class="py-op">:</tt> </tt>
<a name="L379"></a><tt class="py-lineno">379</tt> <tt class="py-line"> <tt class="py-name">exit</tt><tt class="py-op">(</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
</div><a name="L380"></a><tt class="py-lineno">380</tt> <tt class="py-line"> </tt>
<a name="L381"></a><tt class="py-lineno">381</tt> <tt class="py-line"> </tt>
<a name="L382"></a><tt class="py-lineno">382</tt> <tt class="py-line"><tt class="py-keyword">if</tt> <tt class="py-name">__name__</tt> <tt class="py-op">==</tt> <tt class="py-string">"__main__"</tt><tt class="py-op">:</tt> </tt>
<a name="L383"></a><tt class="py-lineno">383</tt> <tt class="py-line"> <tt class="py-name">_test</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L384"></a><tt class="py-lineno">384</tt> <tt class="py-line"> </tt><script type="text/javascript">
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