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<div class="title">cache-hash-test.cc</div> </div>
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<a href="streaming_2cache-hash-test_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="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;</div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;glog/logging.h&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &quot;cache-hash-table.h&quot;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;cache-hash-table.inline.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;standard-hash-table.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;standard-hash-table.inline.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;tuple-types.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="mem-pool_8h.html">runtime/mem-pool.h</a>&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="cpu-info_8h.html">util/cpu-info.h</a>&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</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="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="pretty-printer_8h.html">util/pretty-printer.h</a>&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="hash-util_8h.html">util/hash-util.h</a>&quot;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="runtime-profile_8h.html">util/runtime-profile.h</a>&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="stopwatch_8h.html">util/stopwatch.h</a>&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">using namespace </span>impala;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment">// Very basic hash aggregation prototype and test</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment">// TODO: Generalize beyond hash aggregation, beyond hashing on the one column, etc.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;CacheHashTable::CacheHashTable() {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; num_content_allocated_ = 0;</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;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="keywordtype">void</span> CacheHashTable::BucketSizeDistribution() {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; std::vector&lt;int&gt; bucket_size;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; BUCKETS; ++i) {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordtype">int</span> size = buckets_[i].count;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">if</span> (size &gt;= bucket_size.size()) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="comment">// grow bucket_size to fit this size</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; bucket_size.resize(size + 1, 0);</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"> 38</span>&#160; ++bucket_size[size];</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; }</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; std::stringstream distr;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; bucket_size.size(); ++i) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; distr &lt;&lt; i &lt;&lt; <span class="stringliteral">&quot;: &quot;</span> &lt;&lt; bucket_size[i] &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</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; LOG(INFO) &lt;&lt; <span class="stringliteral">&quot;Bucket Size Distribution\n&quot;</span> &lt;&lt; distr.str();</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;}</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment">// Update ht, which is doing a COUNT(*) GROUP BY id,</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">// by having it process the new tuple probe.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment">// Templatized on the type of hash table so we can reuse code without virtual calls.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="streaming_2cache-hash-test_8cc.html#ab391bae2f450914a21778716068ea1d7"> 53</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="cache-hash-test_8cc.html#ab391bae2f450914a21778716068ea1d7">Process</a>(T* ht, <span class="keyword">const</span> ProbeTuple* probe) {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; BuildTuple *existing = ht-&gt;Find(probe);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">if</span> (existing != NULL) {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; ++existing-&gt;count;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; BuildTuple build;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; build.id = probe-&gt;id;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; build.count = 1;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; ht-&gt;Insert(&amp;build);</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"> 64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment">// Test ht by aggregating input, which is an array of num_tuples ProbeTuples</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment">// Templatized on the type of hash table so we can reuse code without virtual calls.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="streaming_2cache-hash-test_8cc.html#a18269e3eecadb27e79614c02d898173e"> 68</a></span>&#160;<a class="code" href="classuint64__t.html">uint64_t</a> <a class="code" href="cache-hash-test_8cc.html#a18269e3eecadb27e79614c02d898173e">Test</a>(T* ht, <span class="keyword">const</span> ProbeTuple* input, <a class="code" href="classuint64__t.html">uint64_t</a> num_tuples)</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;{</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <a class="code" href="classimpala_1_1StopWatch.html">StopWatch</a> time;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; time.<a class="code" href="classimpala_1_1StopWatch.html#a811ac5c8ae0f5de261c62aba58d911f6">Start</a>();</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; num_tuples; ++i) {</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; Process&lt;T&gt;(ht, &amp;input[i]);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; time.<a class="code" href="classimpala_1_1StopWatch.html#abb3886869c34e8e9a3d2d43a41631dac">Stop</a>();</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">return</span> time.<a class="code" href="classimpala_1_1StopWatch.html#a8b066166745d33cfc6b56bb9cc24e05f">ElapsedTime</a>();</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;}</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"><a class="line" href="streaming_2cache-hash-test_8cc.html#a3c04138a5bfe5d72780bb7e82a18e627"> 79</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="cache-hash-test_8cc.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv) {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; google::InitGoogleLogging(argv[0]);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <a class="code" href="classimpala_1_1CpuInfo.html#ab63b1a50201fc23934e209f407945674">CpuInfo::Init</a>();</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; srand(time(NULL));</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"> 85</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="tuple-layout-benchmark_8cc.html#a211ca4a36123720de08867bcf586f790">NUM_TUPLES</a> = 100000000; <span class="comment">//10^8</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> NUM_BUILD_TUPLES = 4 * CacheHashTable::MaxBuildTuples() / 10;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; CacheHashTable cache_ht;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; StandardHashTable std_ht;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; ProbeTuple* input = GenTuples(NUM_TUPLES, NUM_BUILD_TUPLES);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <a class="code" href="classuint64__t.html">uint64_t</a> cache_time = Test&lt;CacheHashTable&gt;(&amp;cache_ht, input, <a class="code" href="tuple-layout-benchmark_8cc.html#a211ca4a36123720de08867bcf586f790">NUM_TUPLES</a>);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cache-aware time: &quot;</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; &lt;&lt; <a class="code" href="classimpala_1_1PrettyPrinter.html#a6e5f06a1ce274f747cc4f9928b797c5a">PrettyPrinter::Print</a>(cache_time, TUnit::CPU_TICKS);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <a class="code" href="classuint64__t.html">uint64_t</a> std_time = Test&lt;StandardHashTable&gt;(&amp;std_ht, input, <a class="code" href="tuple-layout-benchmark_8cc.html#a211ca4a36123720de08867bcf586f790">NUM_TUPLES</a>);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Bucket-chained time: &quot;</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; &lt;&lt; <a class="code" href="classimpala_1_1PrettyPrinter.html#a6e5f06a1ce274f747cc4f9928b797c5a">PrettyPrinter::Print</a>(std_time, TUnit::CPU_TICKS);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;}</div>
<div class="ttc" id="classimpala_1_1StopWatch_html_a8b066166745d33cfc6b56bb9cc24e05f"><div class="ttname"><a href="classimpala_1_1StopWatch.html#a8b066166745d33cfc6b56bb9cc24e05f">impala::StopWatch::ElapsedTime</a></div><div class="ttdeci">uint64_t ElapsedTime() const </div><div class="ttdoc">Returns time in cpu ticks. </div><div class="ttdef"><b>Definition:</b> <a href="stopwatch_8h_source.html#l00050">stopwatch.h:50</a></div></div>
<div class="ttc" id="runtime-profile_8h_html"><div class="ttname"><a href="runtime-profile_8h.html">runtime-profile.h</a></div></div>
<div class="ttc" id="cache-hash-test_8cc_html_ab391bae2f450914a21778716068ea1d7"><div class="ttname"><a href="cache-hash-test_8cc.html#ab391bae2f450914a21778716068ea1d7">Process</a></div><div class="ttdeci">void Process(T *ht, const ProbeTuple *probe)</div><div class="ttdef"><b>Definition:</b> <a href="cache-hash-test_8cc_source.html#l00052">cache-hash-test.cc:52</a></div></div>
<div class="ttc" id="classimpala_1_1StopWatch_html_a811ac5c8ae0f5de261c62aba58d911f6"><div class="ttname"><a href="classimpala_1_1StopWatch.html#a811ac5c8ae0f5de261c62aba58d911f6">impala::StopWatch::Start</a></div><div class="ttdeci">void Start()</div><div class="ttdef"><b>Definition:</b> <a href="stopwatch_8h_source.html#l00035">stopwatch.h:35</a></div></div>
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<div class="ttc" id="classimpala_1_1PrettyPrinter_html_a6e5f06a1ce274f747cc4f9928b797c5a"><div class="ttname"><a href="classimpala_1_1PrettyPrinter.html#a6e5f06a1ce274f747cc4f9928b797c5a">impala::PrettyPrinter::Print</a></div><div class="ttdeci">static std::string Print(bool value, TUnit::type ignored, bool verbose=false)</div><div class="ttdef"><b>Definition:</b> <a href="pretty-printer_8h_source.html#l00033">pretty-printer.h:33</a></div></div>
<div class="ttc" id="pretty-printer_8h_html"><div class="ttname"><a href="pretty-printer_8h.html">pretty-printer.h</a></div></div>
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<div class="ttc" id="debug-util_8h_html"><div class="ttname"><a href="debug-util_8h.html">debug-util.h</a></div></div>
<div class="ttc" id="tuple-layout-benchmark_8cc_html_a211ca4a36123720de08867bcf586f790"><div class="ttname"><a href="tuple-layout-benchmark_8cc.html#a211ca4a36123720de08867bcf586f790">NUM_TUPLES</a></div><div class="ttdeci">const int NUM_TUPLES</div><div class="ttdef"><b>Definition:</b> <a href="tuple-layout-benchmark_8cc_source.html#l00041">tuple-layout-benchmark.cc:41</a></div></div>
<div class="ttc" id="classuint64__t_html"><div class="ttname"><a href="classuint64__t.html">uint64_t</a></div></div>
<div class="ttc" id="cache-hash-test_8cc_html_a18269e3eecadb27e79614c02d898173e"><div class="ttname"><a href="cache-hash-test_8cc.html#a18269e3eecadb27e79614c02d898173e">Test</a></div><div class="ttdeci">uint64_t Test(T *ht, const ProbeTuple *input, uint64_t num_tuples)</div><div class="ttdef"><b>Definition:</b> <a href="cache-hash-test_8cc_source.html#l00067">cache-hash-test.cc:67</a></div></div>
<div class="ttc" id="classimpala_1_1StopWatch_html_abb3886869c34e8e9a3d2d43a41631dac"><div class="ttname"><a href="classimpala_1_1StopWatch.html#abb3886869c34e8e9a3d2d43a41631dac">impala::StopWatch::Stop</a></div><div class="ttdeci">void Stop()</div><div class="ttdef"><b>Definition:</b> <a href="stopwatch_8h_source.html#l00042">stopwatch.h:42</a></div></div>
<div class="ttc" id="mem-pool_8h_html"><div class="ttname"><a href="mem-pool_8h.html">mem-pool.h</a></div></div>
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