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<a href="data-stream-mgr_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2012 Cloudera Inc.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="data-stream-mgr_8h.html">runtime/data-stream-mgr.h</a>&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;boost/functional/hash.hpp&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;boost/thread/locks.hpp&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;boost/thread/thread.hpp&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="row-batch_8h.html">runtime/row-batch.h</a>&quot;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="data-stream-recvr_8h.html">runtime/data-stream-recvr.h</a>&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="raw-value_8h.html">runtime/raw-value.h</a>&quot;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="runtime-state_8h.html">runtime/runtime-state.h</a>&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="debug-util_8h.html">util/debug-util.h</a>&quot;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="periodic-counter-updater_8h.html">util/periodic-counter-updater.h</a>&quot;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &quot;gen-cpp/ImpalaInternalService.h&quot;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &quot;gen-cpp/ImpalaInternalService_types.h&quot;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="names_8h.html">common/names.h</a>&quot;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">using namespace </span>apache::thrift;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">namespace </span>impala {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#a95816e06681349f08755c5a40749c13f"> 38</a></span>&#160;<span class="keyword">inline</span> uint32_t DataStreamMgr::GetHashValue(</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">const</span> TUniqueId&amp; fragment_instance_id, <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> node_id) {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; uint32_t value = RawValue::GetHashValue(&amp;fragment_instance_id.lo, <a class="code" href="namespaceimpala.html#aa5bce0d3309643287a67504146c2f871ac5602f92ce48738739f551df8ff3e4a7">TYPE_BIGINT</a>, 0);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; value = RawValue::GetHashValue(&amp;fragment_instance_id.hi, <a class="code" href="namespaceimpala.html#aa5bce0d3309643287a67504146c2f871ac5602f92ce48738739f551df8ff3e4a7">TYPE_BIGINT</a>, value);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; value = RawValue::GetHashValue(&amp;node_id, <a class="code" href="namespaceimpala.html#aa5bce0d3309643287a67504146c2f871a8e892339c263b2aaa3712139b0a0c944">TYPE_INT</a>, value);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">return</span> value;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;}</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#ae55e553992518c85b403ef61d915278b"> 46</a></span>&#160;shared_ptr&lt;DataStreamRecvr&gt; DataStreamMgr::CreateRecvr(<a class="code" href="classimpala_1_1RuntimeState.html">RuntimeState</a>* state,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">const</span> <a class="code" href="classimpala_1_1RowDescriptor.html">RowDescriptor</a>&amp; <a class="code" href="namespaceimpala.html#aa98447566dd6700a2faaaaf3059f4d95">row_desc</a>, <span class="keyword">const</span> TUniqueId&amp; fragment_instance_id,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> dest_node_id, <span class="keywordtype">int</span> num_senders, <span class="keywordtype">int</span> buffer_size, <a class="code" href="classimpala_1_1RuntimeProfile.html">RuntimeProfile</a>* profile,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordtype">bool</span> is_merging) {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; DCHECK(profile != NULL);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="logging_8h.html#a0bdc3628c740982e847cd24114c07994">VLOG_FILE</a> &lt;&lt; <span class="stringliteral">&quot;creating receiver for fragment=&quot;</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; &lt;&lt; fragment_instance_id &lt;&lt; <span class="stringliteral">&quot;, node=&quot;</span> &lt;&lt; dest_node_id;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; shared_ptr&lt;DataStreamRecvr&gt; recvr(</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">new</span> <a class="code" href="classimpala_1_1DataStreamRecvr.html">DataStreamRecvr</a>(<span class="keyword">this</span>, state-&gt;<a class="code" href="classimpala_1_1RuntimeState.html#ad6c837d1a8e2d4a995aa00a4df7c5af5">instance_mem_tracker</a>(), <a class="code" href="namespaceimpala.html#aa98447566dd6700a2faaaaf3059f4d95">row_desc</a>,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; fragment_instance_id, dest_node_id, num_senders, is_merging, buffer_size,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; profile));</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="namespaceimpala.html#ac0255e5845537ea9f1d3938ecb19d02c">hash_value</a> = GetHashValue(fragment_instance_id, dest_node_id);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; lock_guard&lt;mutex&gt; l(<a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; fragment_stream_set_.insert(make_pair(fragment_instance_id, dest_node_id));</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; receiver_map_.insert(make_pair(hash_value, recvr));</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">return</span> recvr;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;}</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#ab51f9a794b0185ffaed3e455619ea005"> 64</a></span>&#160;shared_ptr&lt;DataStreamRecvr&gt; DataStreamMgr::FindRecvr(</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">const</span> TUniqueId&amp; fragment_instance_id, <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> node_id, <span class="keywordtype">bool</span> acquire_lock) {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="logging_8h.html#a6ccc2106c47622db4e52a401a415fc58">VLOG_ROW</a> &lt;&lt; <span class="stringliteral">&quot;looking up fragment_instance_id=&quot;</span> &lt;&lt; fragment_instance_id</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, node=&quot;</span> &lt;&lt; node_id;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="namespaceimpala.html#ac0255e5845537ea9f1d3938ecb19d02c">hash_value</a> = GetHashValue(fragment_instance_id, node_id);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">if</span> (acquire_lock) <a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>.lock();</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; pair&lt;StreamMap::iterator, StreamMap::iterator&gt; range =</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; receiver_map_.equal_range(hash_value);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">while</span> (range.first != range.second) {</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; shared_ptr&lt;DataStreamRecvr&gt; recvr = range.first-&gt;second;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">if</span> (recvr-&gt;fragment_instance_id() == fragment_instance_id</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; &amp;&amp; recvr-&gt;dest_node_id() == node_id) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> (acquire_lock) <a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>.unlock();</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">return</span> recvr;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; ++range.first;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">if</span> (acquire_lock) <a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>.unlock();</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">return</span> shared_ptr&lt;DataStreamRecvr&gt;();</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;}</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#aa9d83f991b8039cb6c4f3f20c472dc10"> 85</a></span>&#160;<a class="code" href="classimpala_1_1Status.html">Status</a> DataStreamMgr::AddData(</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">const</span> TUniqueId&amp; fragment_instance_id, <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> dest_node_id,</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keyword">const</span> TRowBatch&amp; thrift_batch, <span class="keywordtype">int</span> sender_id) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <a class="code" href="logging_8h.html#a6ccc2106c47622db4e52a401a415fc58">VLOG_ROW</a> &lt;&lt; <span class="stringliteral">&quot;AddData(): fragment_instance_id=&quot;</span> &lt;&lt; fragment_instance_id</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; &lt;&lt; <span class="stringliteral">&quot; node=&quot;</span> &lt;&lt; dest_node_id</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; &lt;&lt; <span class="stringliteral">&quot; size=&quot;</span> &lt;&lt; RowBatch::GetBatchSize(thrift_batch);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; shared_ptr&lt;DataStreamRecvr&gt; recvr =</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; FindRecvr(fragment_instance_id, dest_node_id);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">if</span> (recvr == NULL) {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="comment">// The receiver may remove itself from the receiver map via DeregisterRecvr()</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="comment">// at any time without considering the remaining number of senders.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="comment">// As a consequence, FindRecvr() may return an innocuous NULL if a thread</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// calling DeregisterRecvr() beat the thread calling FindRecvr()</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="comment">// in acquiring lock_.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="comment">// TODO: Rethink the lifecycle of DataStreamRecvr to distinguish</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="comment">// errors from receiver-initiated teardowns.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; recvr-&gt;AddBatch(thrift_batch, sender_id);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#a70952deaaf72f0dddf57b74e7bb0e9b8"> 107</a></span>&#160;<a class="code" href="classimpala_1_1Status.html">Status</a> DataStreamMgr::CloseSender(<span class="keyword">const</span> TUniqueId&amp; fragment_instance_id,</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> dest_node_id, <span class="keywordtype">int</span> sender_id) {</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <a class="code" href="logging_8h.html#a0bdc3628c740982e847cd24114c07994">VLOG_FILE</a> &lt;&lt; <span class="stringliteral">&quot;CloseSender(): fragment_instance_id=&quot;</span> &lt;&lt; fragment_instance_id</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, node=&quot;</span> &lt;&lt; dest_node_id;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; shared_ptr&lt;DataStreamRecvr&gt; recvr = FindRecvr(fragment_instance_id, dest_node_id);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">if</span> (recvr == NULL) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="comment">// The receiver may remove itself from the receiver map via DeregisterRecvr()</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="comment">// at any time without considering the remaining number of senders.</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="comment">// As a consequence, FindRecvr() may return an innocuous NULL if a thread</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">// calling DeregisterRecvr() beat the thread calling FindRecvr()</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// in acquiring lock_.</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="comment">// TODO: Rethink the lifecycle of DataStreamRecvr to distinguish</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="comment">// errors from receiver-initiated teardowns.</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; recvr-&gt;RemoveSender(sender_id);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;}</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;</div>
<div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#ab2dfba250b21828fc3f92b89a355c450"> 126</a></span>&#160;<a class="code" href="classimpala_1_1Status.html">Status</a> DataStreamMgr::DeregisterRecvr(</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">const</span> TUniqueId&amp; fragment_instance_id, <a class="code" href="namespaceimpala.html#aca80061c98b44477ea84e4332993b7e7">PlanNodeId</a> node_id) {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <a class="code" href="logging_8h.html#a916e38366cee7c32fd5fae7e2ee5e4a9">VLOG_QUERY</a> &lt;&lt; <span class="stringliteral">&quot;DeregisterRecvr(): fragment_instance_id=&quot;</span> &lt;&lt; fragment_instance_id</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, node=&quot;</span> &lt;&lt; node_id;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="namespaceimpala.html#ac0255e5845537ea9f1d3938ecb19d02c">hash_value</a> = GetHashValue(fragment_instance_id, node_id);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; lock_guard&lt;mutex&gt; l(<a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; pair&lt;StreamMap::iterator, StreamMap::iterator&gt; range =</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; receiver_map_.equal_range(hash_value);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">while</span> (range.first != range.second) {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keyword">const</span> shared_ptr&lt;DataStreamRecvr&gt;&amp; recvr = range.first-&gt;second;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keywordflow">if</span> (recvr-&gt;fragment_instance_id() == fragment_instance_id</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; &amp;&amp; recvr-&gt;dest_node_id() == node_id) {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="comment">// Notify concurrent AddData() requests that the stream has been terminated.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; recvr-&gt;CancelStream();</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; fragment_stream_set_.erase(make_pair(recvr-&gt;fragment_instance_id(),</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; recvr-&gt;dest_node_id()));</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; receiver_map_.erase(range.first);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceimpala.html#ac55a10ca0171687156609e8d6ba28127a45b8e4259988c3518a05b9202efb0898">Status::OK</a>;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; ++range.first;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; stringstream err;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; err &lt;&lt; <span class="stringliteral">&quot;unknown row receiver id: fragment_instance_id=&quot;</span> &lt;&lt; fragment_instance_id</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; &lt;&lt; <span class="stringliteral">&quot; node_id=&quot;</span> &lt;&lt; node_id;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; LOG(ERROR) &lt;&lt; err.str();</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1Status.html">Status</a>(err.str());</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;}</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;</div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="classimpala_1_1DataStreamMgr.html#a1d653f6acbcc06c323f84ef4d7e27a8c"> 155</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespaceimpala.html#a508481848105bae62dd5722fd747572a">DataStreamMgr::Cancel</a>(<span class="keyword">const</span> TUniqueId&amp; fragment_instance_id) {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <a class="code" href="logging_8h.html#a916e38366cee7c32fd5fae7e2ee5e4a9">VLOG_QUERY</a> &lt;&lt; <span class="stringliteral">&quot;cancelling all streams for fragment=&quot;</span> &lt;&lt; fragment_instance_id;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; lock_guard&lt;mutex&gt; l(<a class="code" href="lock-benchmark_8cc.html#afbf2eef9150eb3a3ad8d8674115ddad8">lock_</a>);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; FragmentStreamSet::iterator i =</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; fragment_stream_set_.lower_bound(make_pair(fragment_instance_id, 0));</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordflow">while</span> (i != fragment_stream_set_.end() &amp;&amp; i-&gt;first == fragment_instance_id) {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; shared_ptr&lt;DataStreamRecvr&gt; recvr = FindRecvr(i-&gt;first, i-&gt;second, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keywordflow">if</span> (recvr == NULL) {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <span class="comment">// keep going but at least log it</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; stringstream err;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; err &lt;&lt; <span class="stringliteral">&quot;Cancel(): missing in stream_map: fragment=&quot;</span> &lt;&lt; i-&gt;first</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; &lt;&lt; <span class="stringliteral">&quot; node=&quot;</span> &lt;&lt; i-&gt;second;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; LOG(ERROR) &lt;&lt; err.str();</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; recvr-&gt;CancelStream();</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; ++i;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; }</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;}</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;}</div>
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