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<div class="title">BlockIdGenerator.java</div> </div>
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<a href="BlockIdGenerator_8java.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 (c) 2012 Cloudera, Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"><a class="line" href="namespacecom_1_1cloudera_1_1impala_1_1testutil.html"> 2</a></span>&#160;<span class="keyword">package </span>com.cloudera.impala.testutil;</div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;</div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="keyword">import</span> java.io.File;</div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="keyword">import</span> java.io.FileWriter;</div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="keyword">import</span> java.util.List;</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="keyword">import</span> org.apache.hadoop.fs.Path;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="keyword">import</span> org.apache.hadoop.hdfs.DistributedFileSystem;</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="keyword">import</span> org.apache.hadoop.hdfs.HdfsConfiguration;</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="keyword">import</span> org.apache.hadoop.hdfs.protocol.LocatedBlock;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="keyword">import</span> org.apache.hadoop.hdfs.protocol.LocatedBlocks;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog.html">com.cloudera.impala.catalog.Catalog</a>;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db.html">com.cloudera.impala.catalog.Db</a>;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition.html">com.cloudera.impala.catalog.HdfsPartition</a>;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition_1_1FileDescriptor.html">com.cloudera.impala.catalog.HdfsPartition.FileDescriptor</a>;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable.html">com.cloudera.impala.catalog.HdfsTable</a>;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Table.html">com.cloudera.impala.catalog.Table</a>;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">import</span> com.cloudera.impala.thrift.ImpalaInternalServiceConstants;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html"> 28</a></span>&#160;<span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html">BlockIdGenerator</a> {</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; @SuppressWarnings(<span class="stringliteral">&quot;deprecation&quot;</span>)</div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html#a0b6ea33c8bcc085445d254c263ea01c7"> 31</a></span>&#160; public static <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html#a0b6ea33c8bcc085445d254c263ea01c7">main</a>(String[] args)</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; throws Exception {</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="keywordflow">if</span> (args.length != 1) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> Exception(<span class="stringliteral">&quot;Invalid args: BlockIdGenerator &lt;output_file&gt;&quot;</span>);</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; }</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; HdfsConfiguration hdfsConfig = <span class="keyword">new</span> HdfsConfiguration();</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; File output = <span class="keyword">new</span> File(args[0]);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; FileWriter writer = null;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; writer = <span class="keyword">new</span> FileWriter(output);</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; <span class="comment">// Load all tables in the catalog</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog.html">Catalog</a> catalog = CatalogServiceTestCatalog.create();</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">for</span> (String dbName: catalog.<a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog.html#ade0a0f510d1bc454ef8e6a9e23d39346">getDbNames</a>(null)) {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db.html">Db</a> database = catalog.getDb(dbName);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">for</span> (String tableName: database.<a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db.html#a4bb01deb4e00f418480be14ca8c17e16">getAllTableNames</a>()) {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Table.html">Table</a> table = database.getTable(tableName);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="comment">// Only do this for hdfs tables</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">if</span> (table == null || !(table instanceof <a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable.html">HdfsTable</a>)) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; }</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; HdfsTable hdfsTable = (HdfsTable)table;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="comment">// Write the output as &lt;tablename&gt;: &lt;blockid1&gt; &lt;blockid2&gt; &lt;etc&gt;</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; writer.write(tableName + <span class="stringliteral">&quot;:&quot;</span>);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition.html">HdfsPartition</a> partition: hdfsTable.<a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable.html#a8950a7a2caf9a016f9078b43d9ab0840">getPartitions</a>()) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="comment">// Ignore the default partition.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">if</span> (partition.getId() ==</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; ImpalaInternalServiceConstants.DEFAULT_PARTITION_ID) {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">continue</span>;</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; List&lt;FileDescriptor&gt; fileDescriptors = partition.getFileDescriptors();</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition_1_1FileDescriptor.html">FileDescriptor</a> fd : fileDescriptors) {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; Path p = <span class="keyword">new</span> Path(partition.getLocation(), fd.getFileName());</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="comment">// Use a deprecated API to get block ids</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; DistributedFileSystem dfs =</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; (DistributedFileSystem)p.getFileSystem(hdfsConfig);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; LocatedBlocks locations = dfs.getClient().getNamenode().getBlockLocations(</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; p.toUri().getPath(), 0, fd.getFileLength());</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; <span class="keywordflow">for</span> (LocatedBlock lb : locations.getLocatedBlocks()) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordtype">long</span> <span class="keywordtype">id</span> = lb.getBlock().getBlockId();</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; writer.write(<span class="stringliteral">&quot; &quot;</span> + id);</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; }</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; writer.write(<span class="stringliteral">&quot;\n&quot;</span>);</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; }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; } <span class="keywordflow">finally</span> {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordflow">if</span> (writer != null) writer.close();</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; }</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;}</div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition_1_1FileDescriptor_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition_1_1FileDescriptor.html">com.cloudera.impala.catalog.HdfsPartition.FileDescriptor</a></div><div class="ttdef"><b>Definition:</b> <a href="HdfsPartition_8java_source.html#l00065">HdfsPartition.java:65</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db_html_a4bb01deb4e00f418480be14ca8c17e16"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db.html#a4bb01deb4e00f418480be14ca8c17e16">com.cloudera.impala.catalog.Db.getAllTableNames</a></div><div class="ttdeci">List&lt; String &gt; getAllTableNames()</div><div class="ttdef"><b>Definition:</b> <a href="Db_8java_source.html#l00096">Db.java:96</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog.html">com.cloudera.impala.catalog.Catalog</a></div><div class="ttdef"><b>Definition:</b> <a href="Catalog_8java_source.html#l00053">Catalog.java:53</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Table_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Table.html">com.cloudera.impala.catalog.Table</a></div><div class="ttdef"><b>Definition:</b> <a href="Table_8java_source.html#l00051">Table.java:51</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsPartition.html">com.cloudera.impala.catalog.HdfsPartition</a></div><div class="ttdef"><b>Definition:</b> <a href="HdfsPartition_8java_source.html#l00060">HdfsPartition.java:60</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable_html_a8950a7a2caf9a016f9078b43d9ab0840"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable.html#a8950a7a2caf9a016f9078b43d9ab0840">com.cloudera.impala.catalog.HdfsTable.getPartitions</a></div><div class="ttdeci">List&lt; HdfsPartition &gt; getPartitions()</div><div class="ttdef"><b>Definition:</b> <a href="HdfsTable_8java_source.html#l00429">HdfsTable.java:429</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog_html_ade0a0f510d1bc454ef8e6a9e23d39346"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Catalog.html#ade0a0f510d1bc454ef8e6a9e23d39346">com.cloudera.impala.catalog.Catalog.getDbNames</a></div><div class="ttdeci">List&lt; String &gt; getDbNames(String dbPattern)</div><div class="ttdef"><b>Definition:</b> <a href="Catalog_8java_source.html#l00136">Catalog.java:136</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1HdfsTable.html">com.cloudera.impala.catalog.HdfsTable</a></div><div class="ttdef"><b>Definition:</b> <a href="HdfsTable_8java_source.html#l00104">HdfsTable.java:104</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1catalog_1_1Db.html">com.cloudera.impala.catalog.Db</a></div><div class="ttdef"><b>Definition:</b> <a href="Db_8java_source.html#l00044">Db.java:44</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html">com.cloudera.impala.testutil.BlockIdGenerator</a></div><div class="ttdef"><b>Definition:</b> <a href="BlockIdGenerator_8java_source.html#l00028">BlockIdGenerator.java:28</a></div></div>
<div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator_html_a0b6ea33c8bcc085445d254c263ea01c7"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1testutil_1_1BlockIdGenerator.html#a0b6ea33c8bcc085445d254c263ea01c7">com.cloudera.impala.testutil.BlockIdGenerator.main</a></div><div class="ttdeci">static void main(String[] args)</div><div class="ttdef"><b>Definition:</b> <a href="BlockIdGenerator_8java_source.html#l00031">BlockIdGenerator.java:31</a></div></div>
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