| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
| <meta http-equiv="X-UA-Compatible" content="IE=9"/> |
| <meta name="generator" content="Doxygen 1.8.6"/> |
| <title>Impala: be/src/experiments/compression-test.cc Source File</title> |
| <link href="tabs.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="jquery.js"></script> |
| <script type="text/javascript" src="dynsections.js"></script> |
| <link href="navtree.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="resize.js"></script> |
| <script type="text/javascript" src="navtree.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(initResizable); |
| $(window).load(resizeHeight); |
| </script> |
| <link href="search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="search/search.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(function() { searchBox.OnSelectItem(0); }); |
| </script> |
| <link href="doxygen.css" rel="stylesheet" type="text/css" /> |
| </head> |
| <body> |
| <div id="top"><!-- do not remove this div, it is closed by doxygen! --> |
| <div id="titlearea"> |
| <table cellspacing="0" cellpadding="0"> |
| <tbody> |
| <tr style="height: 56px;"> |
| <td style="padding-left: 0.5em;"> |
| <div id="projectname">Impala |
| </div> |
| <div id="projectbrief">Impalaistheopensource,nativeanalyticdatabaseforApacheHadoop.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <!-- end header part --> |
| <!-- Generated by Doxygen 1.8.6 --> |
| <script type="text/javascript"> |
| var searchBox = new SearchBox("searchBox", "search",false,'Search'); |
| </script> |
| <div id="navrow1" class="tabs"> |
| <ul class="tablist"> |
| <li><a href="index.html"><span>Main Page</span></a></li> |
| <li><a href="namespaces.html"><span>Namespaces</span></a></li> |
| <li><a href="annotated.html"><span>Classes</span></a></li> |
| <li class="current"><a href="files.html"><span>Files</span></a></li> |
| <li> |
| <div id="MSearchBox" class="MSearchBoxInactive"> |
| <span class="left"> |
| <img id="MSearchSelect" src="search/mag_sel.png" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| alt=""/> |
| <input type="text" id="MSearchField" value="Search" accesskey="S" |
| onfocus="searchBox.OnSearchFieldFocus(true)" |
| onblur="searchBox.OnSearchFieldFocus(false)" |
| onkeyup="searchBox.OnSearchFieldChange(event)"/> |
| </span><span class="right"> |
| <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> |
| </span> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div id="navrow2" class="tabs2"> |
| <ul class="tablist"> |
| <li><a href="files.html"><span>File List</span></a></li> |
| <li><a href="globals.html"><span>File Members</span></a></li> |
| </ul> |
| </div> |
| </div><!-- top --> |
| <div id="side-nav" class="ui-resizable side-nav-resizable"> |
| <div id="nav-tree"> |
| <div id="nav-tree-contents"> |
| <div id="nav-sync" class="sync"></div> |
| </div> |
| </div> |
| <div id="splitbar" style="-moz-user-select:none;" |
| class="ui-resizable-handle"> |
| </div> |
| </div> |
| <script type="text/javascript"> |
| $(document).ready(function(){initNavTree('compression-test_8cc_source.html','');}); |
| </script> |
| <div id="doc-content"> |
| <!-- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Friends</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Macros</a></div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="javascript:void(0)" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| <div class="header"> |
| <div class="headertitle"> |
| <div class="title">compression-test.cc</div> </div> |
| </div><!--header--> |
| <div class="contents"> |
| <a href="compression-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> <span class="comment">// Copyright (c) 2012 Cloudera, Inc. All rights reserved.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <gtest/gtest.h></span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="compress_8h.html">util/compress.h</a>"</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="names_8h.html">common/names.h</a>"</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">namespace </span>impala {</div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// Utility benchmark to test how well we can compress random string data.</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// NumStrings=1000000 MinLen=10 MaxLen=10 Codec=SNAPPY</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// Uncompressed len: 10000000</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// Compressed len: 10006377</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Sorted Compressed len: 9346971</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// NumStrings=1000000 MinLen=10 MaxLen=10 Codec=GZIP</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// Uncompressed len: 10000000</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// Compressed len: 6352396</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// Sorted Compressed len: 5712650</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// NumStrings=1000000 MinLen=5 MaxLen=15 Codec=SNAPPY</span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// Uncompressed len: 9498531</span></div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// Compressed len: 9503924</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// Sorted Compressed len: 8825841</span></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// NumStrings=1000000 MinLen=5 MaxLen=15 Codec=GZIP</span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// Uncompressed len: 9497973</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Compressed len: 6033310</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// Sorted Compressed len: 5429661</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Generates num strings between min_len and max_len.</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Outputs the uncompressed/compressed/sorted_compressed sizes.</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea"> 32</a></span> <span class="keywordtype">void</span> <a class="code" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">TestCompression</a>(<span class="keywordtype">int</span> num, <span class="keywordtype">int</span> min_len, <span class="keywordtype">int</span> max_len, THdfsCompression::type codec) {</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  vector<string> strings;</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  uint8_t* buffer = (uint8_t*)malloc(max_len * num);</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">int</span> <a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a> = 0;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">int</span> len_delta = max_len - min_len;</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  len_delta = max(len_delta, 1);</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num; ++i) {</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">int</span> len = rand() % len_delta + min_len;</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">int</span> start = <a class="code" href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a>;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < len; ++j) {</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  buffer[offset++] = rand() % 26 + <span class="charliteral">'a'</span>;</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  }</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  strings.push_back(<span class="keywordtype">string</span>((<span class="keywordtype">char</span>*)buffer + start, len));</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// Sort the input and make a new buffer</span></div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  uint8_t* sorted_buffer = (uint8_t*)malloc(offset);</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">int</span> sorted_offset = 0;</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  sort(strings.begin(), strings.end());</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < strings.size(); ++i) {</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  memcpy(sorted_buffer + sorted_offset, strings[i].data(), strings[i].size());</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  sorted_offset += strings[i].size();</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  scoped_ptr<Codec> compressor;</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="classimpala_1_1Codec.html#a18854cd2e08266b09600a6e559c7c6e1">Codec::CreateCompressor</a>(NULL, <span class="keyword">false</span>, codec, &compressor);</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  int64_t compressed_len = compressor->MaxOutputLen(offset);</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  uint8_t* compressed_buffer = (uint8_t*)malloc(compressed_len);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  compressor->ProcessBlock(<span class="keyword">true</span>, offset, buffer, &compressed_len, &compressed_buffer);</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  int64_t sorted_compressed_len = compressor->MaxOutputLen(offset);</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  uint8_t* sorted_compressed_buffer = (uint8_t*)malloc(sorted_compressed_len);</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  compressor->ProcessBlock(<span class="keyword">true</span>, offset, sorted_buffer, &sorted_compressed_len,</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  &sorted_compressed_buffer);</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  cout << <span class="stringliteral">"NumStrings="</span> << num << <span class="stringliteral">" MinLen="</span> << min_len << <span class="stringliteral">" MaxLen="</span> << max_len</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  << <span class="stringliteral">" Codec="</span> << codec << endl;</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  cout << <span class="stringliteral">" Uncompressed len: "</span> << offset << endl;</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  cout << <span class="stringliteral">" Compressed len: "</span> << compressed_len << endl;</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  cout << <span class="stringliteral">" Sorted Compressed len: "</span> << sorted_compressed_len << endl;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  compressor->Close();</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  free(buffer);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  free(compressed_buffer);</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  free(sorted_buffer);</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  free(sorted_compressed_buffer);</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> }</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div> |
| <div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="compression-test_8cc.html#a3c04138a5bfe5d72780bb7e82a18e627"> 83</a></span> <span class="keywordtype">int</span> <a class="code" href="compression-test_8cc.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv) {</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">impala::TestCompression</a>(1000000, 10, 10, impala::THdfsCompression::SNAPPY);</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">impala::TestCompression</a>(1000000, 10, 10, impala::THdfsCompression::GZIP);</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">impala::TestCompression</a>(1000000, 5, 15, impala::THdfsCompression::SNAPPY);</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">impala::TestCompression</a>(1000000, 5, 15, impala::THdfsCompression::GZIP);</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div> |
| <div class="ttc" id="classimpala_1_1Codec_html_a18854cd2e08266b09600a6e559c7c6e1"><div class="ttname"><a href="classimpala_1_1Codec.html#a18854cd2e08266b09600a6e559c7c6e1">impala::Codec::CreateCompressor</a></div><div class="ttdeci">static Status CreateCompressor(MemPool *mem_pool, bool reuse, THdfsCompression::type format, boost::scoped_ptr< Codec > *compressor)</div></div> |
| <div class="ttc" id="compress_8h_html"><div class="ttname"><a href="compress_8h.html">compress.h</a></div></div> |
| <div class="ttc" id="compression-test_8cc_html_a3c04138a5bfe5d72780bb7e82a18e627"><div class="ttname"><a href="compression-test_8cc.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a></div><div class="ttdeci">int main(int argc, char **argv)</div><div class="ttdef"><b>Definition:</b> <a href="compression-test_8cc_source.html#l00083">compression-test.cc:83</a></div></div> |
| <div class="ttc" id="partitioning-throughput-test_8cc_html_ad172ecfd5c31c5df6282c2b4bc322bf7"><div class="ttname"><a href="partitioning-throughput-test_8cc.html#ad172ecfd5c31c5df6282c2b4bc322bf7">offset</a></div><div class="ttdeci">uint8_t offset[7 *64-sizeof(uint64_t)]</div><div class="ttdef"><b>Definition:</b> <a href="partitioning-throughput-test_8cc_source.html#l00037">partitioning-throughput-test.cc:37</a></div></div> |
| <div class="ttc" id="names_8h_html"><div class="ttname"><a href="names_8h.html">names.h</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_a26c9b9c6ad663b08b021492fea38f3ea"><div class="ttname"><a href="namespaceimpala.html#a26c9b9c6ad663b08b021492fea38f3ea">impala::TestCompression</a></div><div class="ttdeci">void TestCompression(int num, int min_len, int max_len, THdfsCompression::type codec)</div><div class="ttdef"><b>Definition:</b> <a href="compression-test_8cc_source.html#l00032">compression-test.cc:32</a></div></div> |
| </div><!-- fragment --></div><!-- contents --> |
| </div><!-- doc-content --> |
| <!-- start footer part --> |
| <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> |
| <ul> |
| <li class="navelem"><a class="el" href="dir_e5d120be6b5e8a44336cbfd013b25604.html">be</a></li><li class="navelem"><a class="el" href="dir_68cf7cafb51a962d5bc4848b83cab0de.html">src</a></li><li class="navelem"><a class="el" href="dir_c9df84a671cd91d3c29aa4a38e7587c0.html">experiments</a></li><li class="navelem"><a class="el" href="compression-test_8cc.html">compression-test.cc</a></li> |
| <li class="footer">Generated on Thu May 7 2015 16:10:35 for Impala by |
| <a href="http://www.doxygen.org/index.html"> |
| <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 </li> |
| </ul> |
| </div> |
| </body> |
| </html> |
