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<a href="pyspark-module.html">Package pyspark</a> ::
Module storagelevel
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<h1 class="epydoc">Source Code for <a href="pyspark.storagelevel-module.html">Module pyspark.storagelevel</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-name">__all__</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-string">"StorageLevel"</tt><tt class="py-op">]</tt> </tt>
<a name="L19"></a><tt class="py-lineno">19</tt> <tt class="py-line"> </tt>
<a name="StorageLevel"></a><div id="StorageLevel-def"><a name="L20"></a><tt class="py-lineno">20</tt> <a class="py-toggle" href="#" id="StorageLevel-toggle" onclick="return toggle('StorageLevel');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pyspark.storagelevel.StorageLevel-class.html">StorageLevel</a><tt class="py-op">:</tt> </tt>
</div><div id="StorageLevel-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="StorageLevel-expanded"><a name="L21"></a><tt class="py-lineno">21</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
<a name="L22"></a><tt class="py-lineno">22</tt> <tt class="py-line"><tt class="py-docstring"> Flags for controlling the storage of an RDD. Each StorageLevel records whether to use memory,</tt> </tt>
<a name="L23"></a><tt class="py-lineno">23</tt> <tt class="py-line"><tt class="py-docstring"> whether to drop the RDD to disk if it falls out of memory, whether to keep the data in memory</tt> </tt>
<a name="L24"></a><tt class="py-lineno">24</tt> <tt class="py-line"><tt class="py-docstring"> in a serialized format, and whether to replicate the RDD partitions on multiple nodes.</tt> </tt>
<a name="L25"></a><tt class="py-lineno">25</tt> <tt class="py-line"><tt class="py-docstring"> Also contains static constants for some commonly used storage levels, such as MEMORY_ONLY.</tt> </tt>
<a name="L26"></a><tt class="py-lineno">26</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
<a name="L27"></a><tt class="py-lineno">27</tt> <tt class="py-line"> </tt>
<a name="StorageLevel.__init__"></a><div id="StorageLevel.__init__-def"><a name="L28"></a><tt class="py-lineno">28</tt> <a class="py-toggle" href="#" id="StorageLevel.__init__-toggle" onclick="return toggle('StorageLevel.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.storagelevel.StorageLevel-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">useDisk</tt><tt class="py-op">,</tt> <tt class="py-param">useMemory</tt><tt class="py-op">,</tt> <tt class="py-param">deserialized</tt><tt class="py-op">,</tt> <tt class="py-param">replication</tt> <tt class="py-op">=</tt> <tt class="py-number">1</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="StorageLevel.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="StorageLevel.__init__-expanded"><a name="L29"></a><tt class="py-lineno">29</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">useDisk</tt> <tt class="py-op">=</tt> <tt class="py-name">useDisk</tt> </tt>
<a name="L30"></a><tt class="py-lineno">30</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">useMemory</tt> <tt class="py-op">=</tt> <tt class="py-name">useMemory</tt> </tt>
<a name="L31"></a><tt class="py-lineno">31</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">deserialized</tt> <tt class="py-op">=</tt> <tt class="py-name">deserialized</tt> </tt>
<a name="L32"></a><tt class="py-lineno">32</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">replication</tt> <tt class="py-op">=</tt> <tt class="py-name">replication</tt> </tt>
</div></div><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 id="link-0" 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-0', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-1" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.DISK_ONLY=pyspark.storagelevel.StorageLevel-class.html#DISK_ONLY"><a title="pyspark.storagelevel.StorageLevel.DISK_ONLY" class="py-name" href="#" onclick="return doclink('link-1', 'DISK_ONLY', 'link-1');">DISK_ONLY</a></tt> <tt class="py-op">=</tt> <tt id="link-2" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-2', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno">35</tt> <tt class="py-line"><tt id="link-3" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-3', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-4" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.DISK_ONLY_2=pyspark.storagelevel.StorageLevel-class.html#DISK_ONLY_2"><a title="pyspark.storagelevel.StorageLevel.DISK_ONLY_2" class="py-name" href="#" onclick="return doclink('link-4', 'DISK_ONLY_2', 'link-4');">DISK_ONLY_2</a></tt> <tt class="py-op">=</tt> <tt id="link-5" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-5', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L36"></a><tt class="py-lineno">36</tt> <tt class="py-line"><tt id="link-6" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-6', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-7" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_ONLY=pyspark.storagelevel.StorageLevel-class.html#MEMORY_ONLY"><a title="pyspark.storagelevel.StorageLevel.MEMORY_ONLY" class="py-name" href="#" onclick="return doclink('link-7', 'MEMORY_ONLY', 'link-7');">MEMORY_ONLY</a></tt> <tt class="py-op">=</tt> <tt id="link-8" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-8', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L37"></a><tt class="py-lineno">37</tt> <tt class="py-line"><tt id="link-9" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-9', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-10" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_ONLY_2=pyspark.storagelevel.StorageLevel-class.html#MEMORY_ONLY_2"><a title="pyspark.storagelevel.StorageLevel.MEMORY_ONLY_2" class="py-name" href="#" onclick="return doclink('link-10', 'MEMORY_ONLY_2', 'link-10');">MEMORY_ONLY_2</a></tt> <tt class="py-op">=</tt> <tt id="link-11" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-11', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L38"></a><tt class="py-lineno">38</tt> <tt class="py-line"><tt id="link-12" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-12', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-13" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_ONLY_SER=pyspark.storagelevel.StorageLevel-class.html#MEMORY_ONLY_SER"><a title="pyspark.storagelevel.StorageLevel.MEMORY_ONLY_SER" class="py-name" href="#" onclick="return doclink('link-13', 'MEMORY_ONLY_SER', 'link-13');">MEMORY_ONLY_SER</a></tt> <tt class="py-op">=</tt> <tt id="link-14" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-14', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">)</tt> </tt>
<a name="L39"></a><tt class="py-lineno">39</tt> <tt class="py-line"><tt id="link-15" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-15', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-16" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_ONLY_SER_2=pyspark.storagelevel.StorageLevel-class.html#MEMORY_ONLY_SER_2"><a title="pyspark.storagelevel.StorageLevel.MEMORY_ONLY_SER_2" class="py-name" href="#" onclick="return doclink('link-16', 'MEMORY_ONLY_SER_2', 'link-16');">MEMORY_ONLY_SER_2</a></tt> <tt class="py-op">=</tt> <tt id="link-17" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-17', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L40"></a><tt class="py-lineno">40</tt> <tt class="py-line"><tt id="link-18" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-18', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-19" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK=pyspark.storagelevel.StorageLevel-class.html#MEMORY_AND_DISK"><a title="pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK" class="py-name" href="#" onclick="return doclink('link-19', 'MEMORY_AND_DISK', 'link-19');">MEMORY_AND_DISK</a></tt> <tt class="py-op">=</tt> <tt id="link-20" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-20', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L41"></a><tt class="py-lineno">41</tt> <tt class="py-line"><tt id="link-21" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-21', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-22" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_2=pyspark.storagelevel.StorageLevel-class.html#MEMORY_AND_DISK_2"><a title="pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_2" class="py-name" href="#" onclick="return doclink('link-22', 'MEMORY_AND_DISK_2', 'link-22');">MEMORY_AND_DISK_2</a></tt> <tt class="py-op">=</tt> <tt id="link-23" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-23', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L42"></a><tt class="py-lineno">42</tt> <tt class="py-line"><tt id="link-24" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-24', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-25" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_SER=pyspark.storagelevel.StorageLevel-class.html#MEMORY_AND_DISK_SER"><a title="pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_SER" class="py-name" href="#" onclick="return doclink('link-25', 'MEMORY_AND_DISK_SER', 'link-25');">MEMORY_AND_DISK_SER</a></tt> <tt class="py-op">=</tt> <tt id="link-26" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-26', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">)</tt> </tt>
<a name="L43"></a><tt class="py-lineno">43</tt> <tt class="py-line"><tt id="link-27" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-27', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">.</tt><tt id="link-28" class="py-name" targets="Variable pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_SER_2=pyspark.storagelevel.StorageLevel-class.html#MEMORY_AND_DISK_SER_2"><a title="pyspark.storagelevel.StorageLevel.MEMORY_AND_DISK_SER_2" class="py-name" href="#" onclick="return doclink('link-28', 'MEMORY_AND_DISK_SER_2', 'link-28');">MEMORY_AND_DISK_SER_2</a></tt> <tt class="py-op">=</tt> <tt id="link-29" class="py-name"><a title="pyspark.storagelevel.StorageLevel" class="py-name" href="#" onclick="return doclink('link-29', 'StorageLevel', 'link-0');">StorageLevel</a></tt><tt class="py-op">(</tt><tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">True</tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-number">2</tt><tt class="py-op">)</tt> </tt>
<a name="L44"></a><tt class="py-lineno">44</tt> <tt class="py-line"> </tt><script type="text/javascript">
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