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| <div class="title">hdfs-fs-cache.h</div> </div> |
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| <div class="contents"> |
| <a href="hdfs-fs-cache_8h.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 2012 Cloudera Inc.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <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> <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> <span class="comment">//</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <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> <span class="comment">//</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <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> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <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> <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> <span class="comment">// limitations under the License.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#ifndef IMPALA_RUNTIME_HDFS_FS_CACHE_H</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor"></span><span class="preprocessor">#define IMPALA_RUNTIME_HDFS_FS_CACHE_H</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <boost/scoped_ptr.hpp></span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <boost/unordered_map.hpp></span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <boost/thread/mutex.hpp></span></div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <<a class="code" href="hdfs_8h.html">hdfs.h</a>></span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">common/status.h</a>"</span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>impala {</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html"> 39</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classimpala_1_1HdfsFsCache.html">HdfsFsCache</a> {</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#ab8cd39a3e94d24aab4599df223a5c313"> 41</a></span>  <span class="keyword">typedef</span> boost::unordered_map<std::string, hdfsFS> <a class="code" href="classimpala_1_1HdfsFsCache.html#ab8cd39a3e94d24aab4599df223a5c313">HdfsFsMap</a>;</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#af7b18daf8c4da6bfce2c7612a515bf64"> 43</a></span>  <span class="keyword">static</span> <a class="code" href="classimpala_1_1HdfsFsCache.html">HdfsFsCache</a>* <a class="code" href="classimpala_1_1HdfsFsCache.html#af7b18daf8c4da6bfce2c7612a515bf64">instance</a>() { <span class="keywordflow">return</span> <a class="code" href="classimpala_1_1HdfsFsCache.html#abc72e9f32db5c918494d9bde77677cf2">HdfsFsCache::instance_</a>.get(); }</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classimpala_1_1HdfsFsCache.html#a3e1eb21b31b3cfbaa5e94e3ceeac5152">Init</a>();</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classimpala_1_1Status.html">Status</a> <a class="code" href="classimpala_1_1HdfsFsCache.html#a99ee21c26efb9d824b6f7d0363d83bf0">GetLocalConnection</a>(hdfsFS* fs);</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classimpala_1_1Status.html">Status</a> <a class="code" href="classimpala_1_1HdfsFsCache.html#a51d1e4eb6eeb4cc3a0b30ebf55c690a9">GetConnection</a>(<span class="keyword">const</span> std::string& <a class="code" href="sasl-test_8cc.html#a2db66f7b463c0e190f8933e51f43d91e">path</a>, hdfsFS* fs,</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classimpala_1_1HdfsFsCache.html#ab8cd39a3e94d24aab4599df223a5c313">HdfsFsMap</a>* local_cache = NULL);</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">static</span> <span class="keywordtype">string</span> <a class="code" href="classimpala_1_1HdfsFsCache.html#ac7173ea32287dcfaf2b0fd196ce2b08b">GetNameNodeFromPath</a>(<span class="keyword">const</span> <span class="keywordtype">string</span>& <a class="code" href="sasl-test_8cc.html#a2db66f7b463c0e190f8933e51f43d91e">path</a>, <span class="keywordtype">string</span>* err);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#abc72e9f32db5c918494d9bde77677cf2"> 64</a></span>  <span class="keyword">static</span> boost::scoped_ptr<HdfsFsCache> <a class="code" href="classimpala_1_1HdfsFsCache.html#abc72e9f32db5c918494d9bde77677cf2">instance_</a>;</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div> |
| <div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#a1414b6c1288bb61278d5ec24491b8437"> 66</a></span>  boost::mutex <a class="code" href="classimpala_1_1HdfsFsCache.html#a1414b6c1288bb61278d5ec24491b8437">lock_</a>; <span class="comment">// protects fs_map_</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#a4297eb1b13be517b6d59f51c71e12115"> 67</a></span>  <a class="code" href="classimpala_1_1HdfsFsCache.html#ab8cd39a3e94d24aab4599df223a5c313">HdfsFsMap</a> <a class="code" href="classimpala_1_1HdfsFsCache.html#a4297eb1b13be517b6d59f51c71e12115">fs_map_</a>;</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="classimpala_1_1HdfsFsCache.html#a12cb53e1819c2ad7b8a7a0a08e81be08"> 69</a></span>  <a class="code" href="classimpala_1_1HdfsFsCache.html#a12cb53e1819c2ad7b8a7a0a08e81be08">HdfsFsCache</a>() { };</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="classimpala_1_1HdfsFsCache.html#a12cb53e1819c2ad7b8a7a0a08e81be08">HdfsFsCache</a>(<a class="code" href="classimpala_1_1HdfsFsCache.html">HdfsFsCache</a> <span class="keyword">const</span>& l); <span class="comment">// disable copy ctor</span></div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classimpala_1_1HdfsFsCache.html">HdfsFsCache</a>& <a class="code" href="classimpala_1_1HdfsFsCache.html#aa385cb86d6df547aa62f335cae1ce0a4">operator=</a>(<a class="code" href="classimpala_1_1HdfsFsCache.html">HdfsFsCache</a> <span class="keyword">const</span>& l); <span class="comment">// disable assignment</span></div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> };</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> }</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#endif</span></div> |
| <div class="ttc" id="sasl-test_8cc_html_a2db66f7b463c0e190f8933e51f43d91e"><div class="ttname"><a href="sasl-test_8cc.html#a2db66f7b463c0e190f8933e51f43d91e">path</a></div><div class="ttdeci">string path("/usr/lib/sasl2:/usr/lib64/sasl2:/usr/local/lib/sasl2:/usr/lib/x86_64-linux-gnu/sasl2")</div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a4297eb1b13be517b6d59f51c71e12115"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a4297eb1b13be517b6d59f51c71e12115">impala::HdfsFsCache::fs_map_</a></div><div class="ttdeci">HdfsFsMap fs_map_</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00067">hdfs-fs-cache.h:67</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_ab8cd39a3e94d24aab4599df223a5c313"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#ab8cd39a3e94d24aab4599df223a5c313">impala::HdfsFsCache::HdfsFsMap</a></div><div class="ttdeci">boost::unordered_map< std::string, hdfsFS > HdfsFsMap</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00041">hdfs-fs-cache.h:41</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_aa385cb86d6df547aa62f335cae1ce0a4"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#aa385cb86d6df547aa62f335cae1ce0a4">impala::HdfsFsCache::operator=</a></div><div class="ttdeci">HdfsFsCache & operator=(HdfsFsCache const &l)</div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a51d1e4eb6eeb4cc3a0b30ebf55c690a9"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a51d1e4eb6eeb4cc3a0b30ebf55c690a9">impala::HdfsFsCache::GetConnection</a></div><div class="ttdeci">Status GetConnection(const std::string &path, hdfsFS *fs, HdfsFsMap *local_cache=NULL)</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8cc_source.html#l00039">hdfs-fs-cache.cc:39</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_ac7173ea32287dcfaf2b0fd196ce2b08b"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#ac7173ea32287dcfaf2b0fd196ce2b08b">impala::HdfsFsCache::GetNameNodeFromPath</a></div><div class="ttdeci">static string GetNameNodeFromPath(const string &path, string *err)</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8cc_source.html#l00082">hdfs-fs-cache.cc:82</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a12cb53e1819c2ad7b8a7a0a08e81be08"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a12cb53e1819c2ad7b8a7a0a08e81be08">impala::HdfsFsCache::HdfsFsCache</a></div><div class="ttdeci">HdfsFsCache()</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00069">hdfs-fs-cache.h:69</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_abc72e9f32db5c918494d9bde77677cf2"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#abc72e9f32db5c918494d9bde77677cf2">impala::HdfsFsCache::instance_</a></div><div class="ttdeci">static boost::scoped_ptr< HdfsFsCache > instance_</div><div class="ttdoc">Singleton instance. Instantiated in Init(). </div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00064">hdfs-fs-cache.h:64</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html">impala::HdfsFsCache</a></div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00039">hdfs-fs-cache.h:39</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_af7b18daf8c4da6bfce2c7612a515bf64"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#af7b18daf8c4da6bfce2c7612a515bf64">impala::HdfsFsCache::instance</a></div><div class="ttdeci">static HdfsFsCache * instance()</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00043">hdfs-fs-cache.h:43</a></div></div> |
| <div class="ttc" id="classimpala_1_1Status_html"><div class="ttname"><a href="classimpala_1_1Status.html">impala::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="status_8h_source.html#l00081">status.h:81</a></div></div> |
| <div class="ttc" id="hdfs_8h_html"><div class="ttname"><a href="hdfs_8h.html">hdfs.h</a></div></div> |
| <div class="ttc" id="status_8h_html"><div class="ttname"><a href="status_8h.html">status.h</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a1414b6c1288bb61278d5ec24491b8437"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a1414b6c1288bb61278d5ec24491b8437">impala::HdfsFsCache::lock_</a></div><div class="ttdeci">boost::mutex lock_</div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8h_source.html#l00066">hdfs-fs-cache.h:66</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a3e1eb21b31b3cfbaa5e94e3ceeac5152"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a3e1eb21b31b3cfbaa5e94e3ceeac5152">impala::HdfsFsCache::Init</a></div><div class="ttdeci">static void Init()</div><div class="ttdoc">Initializes the cache. Must be called before any other APIs. </div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8cc_source.html#l00034">hdfs-fs-cache.cc:34</a></div></div> |
| <div class="ttc" id="classimpala_1_1HdfsFsCache_html_a99ee21c26efb9d824b6f7d0363d83bf0"><div class="ttname"><a href="classimpala_1_1HdfsFsCache.html#a99ee21c26efb9d824b6f7d0363d83bf0">impala::HdfsFsCache::GetLocalConnection</a></div><div class="ttdeci">Status GetLocalConnection(hdfsFS *fs)</div><div class="ttdoc">Get connection to the local filesystem. </div><div class="ttdef"><b>Definition:</b> <a href="hdfs-fs-cache_8cc_source.html#l00078">hdfs-fs-cache.cc:78</a></div></div> |
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