1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
<?xml version="1.0" encoding="ascii"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>pyspark.broadcast</title>
<link rel="stylesheet" href="epydoc.css" type="text/css" />
<script type="text/javascript" src="epydoc.js"></script>
</head>
<body bgcolor="white" text="black" link="blue" vlink="#204080"
alink="#204080">
<!-- ==================== NAVIGATION BAR ==================== -->
<table class="navbar" border="0" width="100%" cellpadding="0"
bgcolor="#a0c0ff" cellspacing="0">
<tr valign="middle">
<!-- Home link -->
<th> <a
href="pyspark-module.html">Home</a> </th>
<!-- Tree link -->
<th> <a
href="module-tree.html">Trees</a> </th>
<!-- Index link -->
<th> <a
href="identifier-index.html">Indices</a> </th>
<!-- Help link -->
<th> <a
href="help.html">Help</a> </th>
<!-- Project homepage -->
<th class="navbar" align="right" width="100%">
<table border="0" cellpadding="0" cellspacing="0">
<tr><th class="navbar" align="center"
><a class="navbar" target="_top" href="http://spark-project.org">PySpark</a></th>
</tr></table></th>
</tr>
</table>
<table width="100%" cellpadding="0" cellspacing="0">
<tr valign="top">
<td width="100%">
<span class="breadcrumbs">
<a href="pyspark-module.html">Package pyspark</a> ::
Module broadcast
</span>
</td>
<td>
<table cellpadding="0" cellspacing="0">
<!-- hide/show private -->
<tr><td align="right"><span class="options"
>[<a href="frames.html" target="_top">frames</a
>] | <a href="pyspark.broadcast-pysrc.html"
target="_top">no frames</a>]</span></td></tr>
</table>
</td>
</tr>
</table>
<h1 class="epydoc">Source Code for <a href="pyspark.broadcast-module.html">Module pyspark.broadcast</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"><tt class="py-docstring">>>> from pyspark.context import SparkContext</tt> </tt>
<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"><tt class="py-docstring">>>> sc = SparkContext('local', 'test')</tt> </tt>
<a name="L4"></a><tt class="py-lineno"> 4</tt> <tt class="py-line"><tt class="py-docstring">>>> b = sc.broadcast([1, 2, 3, 4, 5])</tt> </tt>
<a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"><tt class="py-docstring">>>> b.value</tt> </tt>
<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-docstring">[1, 2, 3, 4, 5]</tt> </tt>
<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-docstring">>>> from pyspark.broadcast import _broadcastRegistry</tt> </tt>
<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-docstring">>>> _broadcastRegistry[b.bid] = b</tt> </tt>
<a name="L10"></a><tt class="py-lineno">10</tt> <tt class="py-line"><tt class="py-docstring">>>> from cPickle import dumps, loads</tt> </tt>
<a name="L11"></a><tt class="py-lineno">11</tt> <tt class="py-line"><tt class="py-docstring">>>> loads(dumps(b)).value</tt> </tt>
<a name="L12"></a><tt class="py-lineno">12</tt> <tt class="py-line"><tt class="py-docstring">[1, 2, 3, 4, 5]</tt> </tt>
<a name="L13"></a><tt class="py-lineno">13</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L14"></a><tt class="py-lineno">14</tt> <tt class="py-line"><tt class="py-docstring">>>> sc.parallelize([0, 0]).flatMap(lambda x: b.value).collect()</tt> </tt>
<a name="L15"></a><tt class="py-lineno">15</tt> <tt class="py-line"><tt class="py-docstring">[1, 2, 3, 4, 5, 1, 2, 3, 4, 5]</tt> </tt>
<a name="L16"></a><tt class="py-lineno">16</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L17"></a><tt class="py-lineno">17</tt> <tt class="py-line"><tt class="py-docstring">>>> large_broadcast = sc.broadcast(list(range(10000)))</tt> </tt>
<a name="L18"></a><tt class="py-lineno">18</tt> <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L19"></a><tt class="py-lineno">19</tt> <tt class="py-line"><tt class="py-comment"># Holds broadcasted data received from Java, keyed by its id.</tt> </tt>
<a name="L20"></a><tt class="py-lineno">20</tt> <tt class="py-line"><tt id="link-0" class="py-name" targets="Variable pyspark.broadcast._broadcastRegistry=pyspark.broadcast-module.html#_broadcastRegistry"><a title="pyspark.broadcast._broadcastRegistry" class="py-name" href="#" onclick="return doclink('link-0', '_broadcastRegistry', 'link-0');">_broadcastRegistry</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L21"></a><tt class="py-lineno">21</tt> <tt class="py-line"> </tt>
<a name="L22"></a><tt class="py-lineno">22</tt> <tt class="py-line"> </tt>
<a name="_from_id"></a><div id="_from_id-def"><a name="L23"></a><tt class="py-lineno">23</tt> <a class="py-toggle" href="#" id="_from_id-toggle" onclick="return toggle('_from_id');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.broadcast-module.html#_from_id">_from_id</a><tt class="py-op">(</tt><tt class="py-param">bid</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_from_id-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="_from_id-expanded"><a name="L24"></a><tt class="py-lineno">24</tt> <tt class="py-line"> <tt class="py-keyword">from</tt> <tt id="link-1" class="py-name" targets="Package pyspark=pyspark-module.html"><a title="pyspark" class="py-name" href="#" onclick="return doclink('link-1', 'pyspark', 'link-1');">pyspark</a></tt><tt class="py-op">.</tt><tt id="link-2" 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-2', 'broadcast', 'link-2');">broadcast</a></tt> <tt class="py-keyword">import</tt> <tt id="link-3" class="py-name"><a title="pyspark.broadcast._broadcastRegistry" class="py-name" href="#" onclick="return doclink('link-3', '_broadcastRegistry', 'link-0');">_broadcastRegistry</a></tt> </tt>
<a name="L25"></a><tt class="py-lineno">25</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">bid</tt> <tt class="py-keyword">not</tt> <tt class="py-keyword">in</tt> <tt id="link-4" class="py-name"><a title="pyspark.broadcast._broadcastRegistry" class="py-name" href="#" onclick="return doclink('link-4', '_broadcastRegistry', 'link-0');">_broadcastRegistry</a></tt><tt class="py-op">:</tt> </tt>
<a name="L26"></a><tt class="py-lineno">26</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">"Broadcast variable '%s' not loaded!"</tt> <tt class="py-op">%</tt> <tt class="py-name">bid</tt><tt class="py-op">)</tt> </tt>
<a name="L27"></a><tt class="py-lineno">27</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-5" class="py-name"><a title="pyspark.broadcast._broadcastRegistry" class="py-name" href="#" onclick="return doclink('link-5', '_broadcastRegistry', 'link-0');">_broadcastRegistry</a></tt><tt class="py-op">[</tt><tt class="py-name">bid</tt><tt class="py-op">]</tt> </tt>
</div><a name="L28"></a><tt class="py-lineno">28</tt> <tt class="py-line"> </tt>
<a name="L29"></a><tt class="py-lineno">29</tt> <tt class="py-line"> </tt>
<a name="Broadcast"></a><div id="Broadcast-def"><a name="L30"></a><tt class="py-lineno">30</tt> <a class="py-toggle" href="#" id="Broadcast-toggle" onclick="return toggle('Broadcast');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pyspark.broadcast.Broadcast-class.html">Broadcast</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="Broadcast-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Broadcast-expanded"><a name="Broadcast.__init__"></a><div id="Broadcast.__init__-def"><a name="L31"></a><tt class="py-lineno">31</tt> <a class="py-toggle" href="#" id="Broadcast.__init__-toggle" onclick="return toggle('Broadcast.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.broadcast.Broadcast-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">bid</tt><tt class="py-op">,</tt> <tt class="py-param">value</tt><tt class="py-op">,</tt> <tt class="py-param">java_broadcast</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">pickle_registry</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="Broadcast.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Broadcast.__init__-expanded"><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 id="link-6" 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-6', 'value', 'link-6');">value</a></tt> <tt class="py-op">=</tt> <tt id="link-7" class="py-name"><a title="pyspark.accumulators.Accumulator.value" class="py-name" href="#" onclick="return doclink('link-7', 'value', 'link-6');">value</a></tt> </tt>
<a name="L33"></a><tt class="py-lineno">33</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">bid</tt> <tt class="py-op">=</tt> <tt class="py-name">bid</tt> </tt>
<a name="L34"></a><tt class="py-lineno">34</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_jbroadcast</tt> <tt class="py-op">=</tt> <tt class="py-name">java_broadcast</tt> </tt>
<a name="L35"></a><tt class="py-lineno">35</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_pickle_registry</tt> <tt class="py-op">=</tt> <tt class="py-name">pickle_registry</tt> </tt>
</div><a name="L36"></a><tt class="py-lineno">36</tt> <tt class="py-line"> </tt>
<a name="Broadcast.__reduce__"></a><div id="Broadcast.__reduce__-def"><a name="L37"></a><tt class="py-lineno">37</tt> <a class="py-toggle" href="#" id="Broadcast.__reduce__-toggle" onclick="return toggle('Broadcast.__reduce__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pyspark.broadcast.Broadcast-class.html#__reduce__">__reduce__</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="Broadcast.__reduce__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Broadcast.__reduce__-expanded"><a name="L38"></a><tt class="py-lineno">38</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_pickle_registry</tt><tt class="py-op">.</tt><tt class="py-name">add</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">)</tt> </tt>
<a name="L39"></a><tt class="py-lineno">39</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt class="py-name">_from_id</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">bid</tt><tt class="py-op">,</tt> <tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L40"></a><tt class="py-lineno">40</tt> <tt class="py-line"> </tt><script type="text/javascript">
<!--
expandto(location.href);
// -->
</script>
</pre>
<br />
<!-- ==================== NAVIGATION BAR ==================== -->
<table class="navbar" border="0" width="100%" cellpadding="0"
bgcolor="#a0c0ff" cellspacing="0">
<tr valign="middle">
<!-- Home link -->
<th> <a
href="pyspark-module.html">Home</a> </th>
<!-- Tree link -->
<th> <a
href="module-tree.html">Trees</a> </th>
<!-- Index link -->
<th> <a
href="identifier-index.html">Indices</a> </th>
<!-- Help link -->
<th> <a
href="help.html">Help</a> </th>
<!-- Project homepage -->
<th class="navbar" align="right" width="100%">
<table border="0" cellpadding="0" cellspacing="0">
<tr><th class="navbar" align="center"
><a class="navbar" target="_top" href="http://spark-project.org">PySpark</a></th>
</tr></table></th>
</tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" width="100%%">
<tr>
<td align="left" class="footer">
Generated by Epydoc 3.0.1 on Tue Feb 26 22:47:39 2013
</td>
<td align="right" class="footer">
<a target="mainFrame" href="http://epydoc.sourceforge.net"
>http://epydoc.sourceforge.net</a>
</td>
</tr>
</table>
<script type="text/javascript">
<!--
// Private objects are initially displayed (because if
// javascript is turned off then we want them to be
// visible); but by default, we want to hide them. So hide
// them unless we have a cookie that says to show them.
checkCookie();
// -->
</script>
</body>
</html>
|