Repository: hbase-site Updated Branches: refs/heads/asf-site 526c78223 -> 6a178a983
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/6a178a98/xref/org/apache/hadoop/hbase/tool/Canary.html ---------------------------------------------------------------------- diff --git a/xref/org/apache/hadoop/hbase/tool/Canary.html b/xref/org/apache/hadoop/hbase/tool/Canary.html index 043c18b..3d20048 100644 --- a/xref/org/apache/hadoop/hbase/tool/Canary.html +++ b/xref/org/apache/hadoop/hbase/tool/Canary.html @@ -104,1153 +104,1116 @@ <a class="jxr_linenumber" name="94" href="#94">94</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Canary</a> <strong class="jxr_keyword">implements</strong> Tool { <a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_comment">// Sink interface used by the canary to outputs information</em> <a class="jxr_linenumber" name="96" href="#96">96</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> { -<a class="jxr_linenumber" name="97" href="#97">97</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getReadFailureCount(); -<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(<a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, Exception e); -<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(<a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/HColumnDescriptor.html">HColumnDescriptor</a> column, Exception e); -<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(<a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/HColumnDescriptor.html">HColumnDescriptor</a> column, <strong class="jxr_keyword">long</strong> msTime); 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-<a class="jxr_linenumber" name="105" href="#105">105</a> } -<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_comment">// new extended sink for output regionserver mode info</em> -<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_comment">// do not change the Sink interface directly due to maintaining the API</em> -<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> { -<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(String table, String server); -<a class="jxr_linenumber" name="110" href="#110">110</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(String table, String server, <strong class="jxr_keyword">long</strong> msTime); -<a class="jxr_linenumber" name="111" href="#111">111</a> } -<a class="jxr_linenumber" name="112" href="#112">112</a> -<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_comment">// Simple implementation of canary sink that allows to plot on</em> -<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_comment">// file or standard output timings or failures.</em> -<a class="jxr_linenumber" name="115" href="#115">115</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">StdOutSink</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> { -<a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">protected</strong> AtomicLong readFailureCount = <strong class="jxr_keyword">new</strong> AtomicLong(0), -<a class="jxr_linenumber" name="117" href="#117">117</a> writeFailureCount = <strong class="jxr_keyword">new</strong> AtomicLong(0); 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+<a class="jxr_linenumber" name="103" href="#103">103</a> } +<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_comment">// new extended sink for output regionserver mode info</em> +<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_comment">// do not change the Sink interface directly due to maintaining the API</em> +<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> { +<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(String table, String server); +<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(String table, String server, <strong class="jxr_keyword">long</strong> msTime); 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-<a class="jxr_linenumber" name="135" href="#135">135</a> } -<a class="jxr_linenumber" name="136" href="#136">136</a> -<a class="jxr_linenumber" name="137" href="#137">137</a> @Override -<a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(<a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/HColumnDescriptor.html">HColumnDescriptor</a> column, <strong class="jxr_keyword">long</strong> msTime) { -<a class="jxr_linenumber" name="139" href="#139">139</a> LOG.info(String.format(<span class="jxr_string">"read from region %s column family %s in %dms"</span>, -<a class="jxr_linenumber" name="140" href="#140">140</a> region.getRegionNameAsString(), column.getNameAsString(), msTime)); -<a class="jxr_linenumber" name="141" href="#141">141</a> } -<a class="jxr_linenumber" name="142" href="#142">142</a> -<a class="jxr_linenumber" name="143" href="#143">143</a> @Override -<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getWriteFailureCount() { -<a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">return</strong> writeFailureCount.get(); 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-<a class="jxr_linenumber" name="159" href="#159">159</a> } -<a class="jxr_linenumber" name="160" href="#160">160</a> -<a class="jxr_linenumber" name="161" href="#161">161</a> @Override -<a class="jxr_linenumber" name="162" href="#162">162</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishWriteTiming(<a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/HColumnDescriptor.html">HColumnDescriptor</a> column, <strong class="jxr_keyword">long</strong> msTime) { -<a class="jxr_linenumber" name="163" href="#163">163</a> LOG.info(String.format(<span class="jxr_string">"write to region %s column family %s in %dms"</span>, -<a class="jxr_linenumber" name="164" href="#164">164</a> region.getRegionNameAsString(), column.getNameAsString(), msTime)); -<a class="jxr_linenumber" name="165" href="#165">165</a> } -<a class="jxr_linenumber" name="166" href="#166">166</a> } -<a class="jxr_linenumber" name="167" href="#167">167</a> <em class="jxr_comment">// a ExtendedSink implementation</em> -<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerStdOutSink</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">StdOutSink</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> { -<a class="jxr_linenumber" name="169" href="#169">169</a> -<a class="jxr_linenumber" name="170" href="#170">170</a> @Override -<a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(String table, String server) { -<a class="jxr_linenumber" name="172" href="#172">172</a> readFailureCount.incrementAndGet(); -<a class="jxr_linenumber" name="173" href="#173">173</a> LOG.error(String.format(<span class="jxr_string">"Read from table:%s on region server:%s"</span>, table, server)); -<a class="jxr_linenumber" name="174" href="#174">174</a> } +<a class="jxr_linenumber" name="147" href="#147">147</a> } +<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_comment">// a ExtendedSink implementation</em> +<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerStdOutSink</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">StdOutSink</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> { +<a class="jxr_linenumber" name="150" href="#150">150</a> +<a class="jxr_linenumber" name="151" href="#151">151</a> @Override +<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadFailure(String table, String server) { +<a class="jxr_linenumber" name="153" href="#153">153</a> LOG.error(String.format(<span class="jxr_string">"Read from table:%s on region server:%s"</span>, table, server)); +<a class="jxr_linenumber" name="154" href="#154">154</a> } +<a class="jxr_linenumber" name="155" href="#155">155</a> +<a class="jxr_linenumber" name="156" href="#156">156</a> @Override +<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(String table, String server, <strong class="jxr_keyword">long</strong> msTime) { +<a class="jxr_linenumber" name="158" href="#158">158</a> LOG.info(String.format(<span class="jxr_string">"Read from table:%s on region server:%s in %dms"</span>, +<a class="jxr_linenumber" name="159" href="#159">159</a> table, server, msTime)); +<a class="jxr_linenumber" name="160" href="#160">160</a> } +<a class="jxr_linenumber" name="161" href="#161">161</a> } +<a class="jxr_linenumber" name="162" href="#162">162</a> +<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment"> * For each column family of the region tries to get one row and outputs the latency, or the</em> +<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment"> * failure.</em> +<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionTask</a> <strong class="jxr_keyword">implements</strong> Callable<Void> { +<a class="jxr_linenumber" name="168" href="#168">168</a> <strong class="jxr_keyword">public</strong> enum <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a>{ +<a class="jxr_linenumber" name="169" href="#169">169</a> READ, WRITE +<a class="jxr_linenumber" name="170" href="#170">170</a> } +<a class="jxr_linenumber" name="171" href="#171">171</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection; +<a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region; +<a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> sink; +<a class="jxr_linenumber" name="174" href="#174">174</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a> taskType; <a class="jxr_linenumber" name="175" href="#175">175</a> -<a class="jxr_linenumber" name="176" href="#176">176</a> @Override -<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> publishReadTiming(String table, String server, <strong class="jxr_keyword">long</strong> msTime) { -<a class="jxr_linenumber" name="178" href="#178">178</a> LOG.info(String.format(<span class="jxr_string">"Read from table:%s on region server:%s in %dms"</span>, -<a class="jxr_linenumber" name="179" href="#179">179</a> table, server, msTime)); -<a class="jxr_linenumber" name="180" href="#180">180</a> } -<a class="jxr_linenumber" name="181" href="#181">181</a> } +<a class="jxr_linenumber" name="176" href="#176">176</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionTask</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection, <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> sink, <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a> taskType) { +<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">this</strong>.connection = connection; +<a class="jxr_linenumber" name="178" href="#178">178</a> <strong class="jxr_keyword">this</strong>.region = region; +<a class="jxr_linenumber" name="179" href="#179">179</a> <strong class="jxr_keyword">this</strong>.sink = sink; +<a class="jxr_linenumber" name="180" href="#180">180</a> <strong class="jxr_keyword">this</strong>.taskType = taskType; +<a class="jxr_linenumber" name="181" href="#181">181</a> } <a class="jxr_linenumber" name="182" href="#182">182</a> -<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment"> * For each column family of the region tries to get one row and outputs the latency, or the</em> -<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment"> * failure.</em> -<a class="jxr_linenumber" name="186" href="#186">186</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionTask</a> <strong class="jxr_keyword">implements</strong> Callable<Void> { -<a class="jxr_linenumber" name="188" href="#188">188</a> <strong class="jxr_keyword">public</strong> enum <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a>{ -<a class="jxr_linenumber" name="189" href="#189">189</a> READ, WRITE -<a class="jxr_linenumber" name="190" href="#190">190</a> } -<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection; -<a class="jxr_linenumber" name="192" href="#192">192</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region; -<a class="jxr_linenumber" name="193" href="#193">193</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> sink; -<a class="jxr_linenumber" name="194" href="#194">194</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a> taskType; -<a class="jxr_linenumber" name="195" href="#195">195</a> -<a class="jxr_linenumber" name="196" href="#196">196</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionTask</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection, <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">Sink</a> sink, <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">TaskType</a> taskType) { -<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">this</strong>.connection = connection; -<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">this</strong>.region = region; -<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">this</strong>.sink = sink; -<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">this</strong>.taskType = taskType; -<a class="jxr_linenumber" name="201" href="#201">201</a> } -<a class="jxr_linenumber" name="202" href="#202">202</a> -<a class="jxr_linenumber" name="203" href="#203">203</a> @Override -<a class="jxr_linenumber" name="204" href="#204">204</a> <strong class="jxr_keyword">public</strong> Void call() { -<a class="jxr_linenumber" name="205" href="#205">205</a> <strong class="jxr_keyword">switch</strong> (taskType) { -<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">case</strong> READ: -<a class="jxr_linenumber" name="207" href="#207">207</a> <strong class="jxr_keyword">return</strong> read(); -<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">case</strong> WRITE: -<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">return</strong> write(); -<a class="jxr_linenumber" name="210" href="#210">210</a> <strong class="jxr_keyword">default</strong>: -<a class="jxr_linenumber" name="211" href="#211">211</a> <strong class="jxr_keyword">return</strong> read(); -<a class="jxr_linenumber" name="212" href="#212">212</a> } -<a class="jxr_linenumber" name="213" href="#213">213</a> } -<a class="jxr_linenumber" name="214" href="#214">214</a> -<a class="jxr_linenumber" name="215" href="#215">215</a> <strong class="jxr_keyword">public</strong> Void read() { -<a class="jxr_linenumber" name="216" href="#216">216</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="217" href="#217">217</a> <a href="../../../../../org/apache/hadoop/hbase/HTableDescriptor.html">HTableDescriptor</a> tableDesc = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="218" href="#218">218</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="219" href="#219">219</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { -<a class="jxr_linenumber" name="220" href="#220">220</a> LOG.debug(String.format(<span class="jxr_string">"reading table descriptor for table %s"</span>, -<a class="jxr_linenumber" name="221" href="#221">221</a> region.getTable())); -<a class="jxr_linenumber" name="222" href="#222">222</a> } -<a class="jxr_linenumber" name="223" href="#223">223</a> table = connection.getTable(region.getTable()); -<a class="jxr_linenumber" name="224" href="#224">224</a> tableDesc = table.getTableDescriptor(); -<a class="jxr_linenumber" name="225" href="#225">225</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { -<a class="jxr_linenumber" name="226" href="#226">226</a> LOG.debug(<span class="jxr_string">"sniffRegion failed"</span>, e); -<a class="jxr_linenumber" name="227" href="#227">227</a> sink.publishReadFailure(region, e); -<a class="jxr_linenumber" name="228" href="#228">228</a> <strong class="jxr_keyword">if</strong> (table != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="229" href="#229">229</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="230" href="#230">230</a> table.close(); -<a class="jxr_linenumber" name="231" href="#231">231</a> } <strong class="jxr_keyword">catch</strong> (IOException ioe) { -<a class="jxr_linenumber" name="232" href="#232">232</a> LOG.error(<span class="jxr_string">"Close table failed"</span>, e); -<a class="jxr_linenumber" name="233" href="#233">233</a> } -<a class="jxr_linenumber" name="234" href="#234">234</a> } -<a class="jxr_linenumber" name="235" href="#235">235</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="236" href="#236">236</a> } -<a class="jxr_linenumber" name="237" href="#237">237</a> -<a class="jxr_linenumber" name="238" href="#238">238</a> byte[] startKey = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="239" href="#239">239</a> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a> get = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="240" href="#240">240</a> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="241" href="#241">241</a> <a href="../../../../../org/apache/hadoop/hbase/client/ResultScanner.html">ResultScanner</a> rs = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="242" href="#242">242</a> StopWatch stopWatch = <strong class="jxr_keyword">new</strong> StopWatch(); -<a class="jxr_linenumber" name="243" href="#243">243</a> <strong class="jxr_keyword">for</strong> (HColumnDescriptor column : tableDesc.getColumnFamilies()) { -<a class="jxr_linenumber" name="244" href="#244">244</a> stopWatch.reset(); -<a class="jxr_linenumber" name="245" href="#245">245</a> startKey = region.getStartKey(); -<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_comment">// Can't do a get on empty start row so do a Scan of first element if any instead.</em> -<a class="jxr_linenumber" name="247" href="#247">247</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { -<a class="jxr_linenumber" name="248" href="#248">248</a> get = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a>(startKey); -<a class="jxr_linenumber" name="249" href="#249">249</a> get.setCacheBlocks(false); 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-<a class="jxr_linenumber" name="258" href="#258">258</a> scan.addFamily(column.getName()); -<a class="jxr_linenumber" name="259" href="#259">259</a> scan.setMaxResultSize(1L); -<a class="jxr_linenumber" name="260" href="#260">260</a> scan.setSmall(<strong class="jxr_keyword">true</strong>); -<a class="jxr_linenumber" name="261" href="#261">261</a> } -<a class="jxr_linenumber" name="262" href="#262">262</a> -<a class="jxr_linenumber" name="263" href="#263">263</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { -<a class="jxr_linenumber" name="264" href="#264">264</a> LOG.debug(String.format(<span class="jxr_string">"reading from table %s region %s column family %s and key %s"</span>, -<a class="jxr_linenumber" name="265" href="#265">265</a> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(), -<a class="jxr_linenumber" name="266" href="#266">266</a> Bytes.toStringBinary(startKey))); +<a class="jxr_linenumber" name="183" href="#183">183</a> @Override +<a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">public</strong> Void call() { +<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">switch</strong> (taskType) { +<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">case</strong> READ: +<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">return</strong> read(); +<a class="jxr_linenumber" name="188" href="#188">188</a> <strong class="jxr_keyword">case</strong> WRITE: +<a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">return</strong> write(); +<a class="jxr_linenumber" name="190" href="#190">190</a> <strong class="jxr_keyword">default</strong>: +<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">return</strong> read(); +<a class="jxr_linenumber" name="192" href="#192">192</a> } +<a class="jxr_linenumber" name="193" href="#193">193</a> } +<a class="jxr_linenumber" name="194" href="#194">194</a> +<a class="jxr_linenumber" name="195" href="#195">195</a> <strong class="jxr_keyword">public</strong> Void read() { +<a class="jxr_linenumber" name="196" href="#196">196</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="197" href="#197">197</a> <a href="../../../../../org/apache/hadoop/hbase/HTableDescriptor.html">HTableDescriptor</a> tableDesc = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { +<a class="jxr_linenumber" name="200" href="#200">200</a> LOG.debug(String.format(<span class="jxr_string">"reading table descriptor for table %s"</span>, +<a class="jxr_linenumber" name="201" href="#201">201</a> region.getTable())); +<a class="jxr_linenumber" name="202" href="#202">202</a> } +<a class="jxr_linenumber" name="203" href="#203">203</a> table = connection.getTable(region.getTable()); +<a class="jxr_linenumber" name="204" href="#204">204</a> tableDesc = table.getTableDescriptor(); +<a class="jxr_linenumber" name="205" href="#205">205</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { +<a class="jxr_linenumber" name="206" href="#206">206</a> LOG.debug(<span class="jxr_string">"sniffRegion failed"</span>, e); +<a class="jxr_linenumber" name="207" href="#207">207</a> sink.publishReadFailure(region, e); 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+<a class="jxr_linenumber" name="219" href="#219">219</a> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a> get = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="220" href="#220">220</a> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="221" href="#221">221</a> <a href="../../../../../org/apache/hadoop/hbase/client/ResultScanner.html">ResultScanner</a> rs = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="222" href="#222">222</a> StopWatch stopWatch = <strong class="jxr_keyword">new</strong> StopWatch(); +<a class="jxr_linenumber" name="223" href="#223">223</a> <strong class="jxr_keyword">for</strong> (HColumnDescriptor column : tableDesc.getColumnFamilies()) { +<a class="jxr_linenumber" name="224" href="#224">224</a> stopWatch.reset(); +<a class="jxr_linenumber" name="225" href="#225">225</a> startKey = region.getStartKey(); +<a class="jxr_linenumber" name="226" href="#226">226</a> <em class="jxr_comment">// Can't do a get on empty start row so do a Scan of first element if any instead.</em> +<a class="jxr_linenumber" name="227" href="#227">227</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { +<a class="jxr_linenumber" name="228" href="#228">228</a> get = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a>(startKey); +<a class="jxr_linenumber" name="229" href="#229">229</a> get.setCacheBlocks(false); +<a class="jxr_linenumber" name="230" href="#230">230</a> get.setFilter(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/filter/FirstKeyOnlyFilter.html">FirstKeyOnlyFilter</a>()); +<a class="jxr_linenumber" name="231" href="#231">231</a> get.addFamily(column.getName()); +<a class="jxr_linenumber" name="232" href="#232">232</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="233" href="#233">233</a> scan = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a>(); +<a class="jxr_linenumber" name="234" href="#234">234</a> scan.setRaw(<strong class="jxr_keyword">true</strong>); +<a class="jxr_linenumber" name="235" href="#235">235</a> scan.setCaching(1); +<a class="jxr_linenumber" name="236" href="#236">236</a> scan.setCacheBlocks(false); +<a class="jxr_linenumber" name="237" href="#237">237</a> scan.setFilter(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/filter/FirstKeyOnlyFilter.html">FirstKeyOnlyFilter</a>()); +<a class="jxr_linenumber" name="238" href="#238">238</a> scan.addFamily(column.getName()); +<a class="jxr_linenumber" name="239" href="#239">239</a> scan.setMaxResultSize(1L); +<a class="jxr_linenumber" name="240" href="#240">240</a> scan.setSmall(<strong class="jxr_keyword">true</strong>); +<a class="jxr_linenumber" name="241" href="#241">241</a> } +<a class="jxr_linenumber" name="242" href="#242">242</a> +<a class="jxr_linenumber" name="243" href="#243">243</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { +<a class="jxr_linenumber" name="244" href="#244">244</a> LOG.debug(String.format(<span class="jxr_string">"reading from table %s region %s column family %s and key %s"</span>, +<a class="jxr_linenumber" name="245" href="#245">245</a> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(), +<a class="jxr_linenumber" name="246" href="#246">246</a> Bytes.toStringBinary(startKey))); +<a class="jxr_linenumber" name="247" href="#247">247</a> } +<a class="jxr_linenumber" name="248" href="#248">248</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="249" href="#249">249</a> stopWatch.start(); +<a class="jxr_linenumber" name="250" href="#250">250</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { +<a class="jxr_linenumber" name="251" href="#251">251</a> table.get(get); +<a class="jxr_linenumber" name="252" href="#252">252</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="253" href="#253">253</a> rs = table.getScanner(scan); +<a class="jxr_linenumber" name="254" href="#254">254</a> rs.next(); +<a class="jxr_linenumber" name="255" href="#255">255</a> } +<a class="jxr_linenumber" name="256" href="#256">256</a> stopWatch.stop(); +<a class="jxr_linenumber" name="257" href="#257">257</a> sink.publishReadTiming(region, column, stopWatch.getTime()); +<a class="jxr_linenumber" name="258" href="#258">258</a> } <strong class="jxr_keyword">catch</strong> (Exception e) { +<a class="jxr_linenumber" name="259" href="#259">259</a> sink.publishReadFailure(region, column, e); +<a class="jxr_linenumber" name="260" href="#260">260</a> } <strong class="jxr_keyword">finally</strong> { +<a class="jxr_linenumber" name="261" href="#261">261</a> <strong class="jxr_keyword">if</strong> (rs != <strong class="jxr_keyword">null</strong>) { +<a class="jxr_linenumber" name="262" href="#262">262</a> rs.close(); +<a class="jxr_linenumber" name="263" href="#263">263</a> } +<a class="jxr_linenumber" name="264" href="#264">264</a> scan = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="265" href="#265">265</a> get = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="266" href="#266">266</a> startKey = <strong class="jxr_keyword">null</strong>; <a class="jxr_linenumber" name="267" href="#267">267</a> } -<a class="jxr_linenumber" name="268" href="#268">268</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="269" href="#269">269</a> stopWatch.start(); -<a class="jxr_linenumber" name="270" href="#270">270</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { -<a class="jxr_linenumber" name="271" href="#271">271</a> table.get(get); -<a class="jxr_linenumber" name="272" href="#272">272</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="273" href="#273">273</a> rs = table.getScanner(scan); -<a class="jxr_linenumber" name="274" href="#274">274</a> rs.next(); -<a class="jxr_linenumber" name="275" href="#275">275</a> } -<a class="jxr_linenumber" name="276" href="#276">276</a> stopWatch.stop(); -<a class="jxr_linenumber" name="277" href="#277">277</a> sink.publishReadTiming(region, column, stopWatch.getTime()); -<a class="jxr_linenumber" name="278" href="#278">278</a> } <strong class="jxr_keyword">catch</strong> (Exception e) { -<a class="jxr_linenumber" name="279" href="#279">279</a> sink.publishReadFailure(region, column, e); -<a class="jxr_linenumber" name="280" href="#280">280</a> } <strong class="jxr_keyword">finally</strong> { -<a class="jxr_linenumber" name="281" href="#281">281</a> <strong class="jxr_keyword">if</strong> (rs != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="282" href="#282">282</a> rs.close(); -<a class="jxr_linenumber" name="283" href="#283">283</a> } -<a class="jxr_linenumber" name="284" href="#284">284</a> scan = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="285" href="#285">285</a> get = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="286" href="#286">286</a> startKey = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="287" href="#287">287</a> } -<a class="jxr_linenumber" name="288" href="#288">288</a> } -<a class="jxr_linenumber" name="289" href="#289">289</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="290" href="#290">290</a> table.close(); -<a class="jxr_linenumber" name="291" href="#291">291</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { -<a class="jxr_linenumber" name="292" href="#292">292</a> LOG.error(<span class="jxr_string">"Close table failed"</span>, e); -<a class="jxr_linenumber" name="293" href="#293">293</a> } -<a class="jxr_linenumber" name="294" href="#294">294</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="295" href="#295">295</a> } -<a class="jxr_linenumber" name="296" href="#296">296</a> -<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="298" href="#298">298</a> <em class="jxr_javadoccomment"> * Check writes for the canary table</em> -<a class="jxr_linenumber" name="299" href="#299">299</a> <em class="jxr_javadoccomment"> * @return</em> -<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="301" href="#301">301</a> <strong class="jxr_keyword">private</strong> Void write() { -<a class="jxr_linenumber" name="302" href="#302">302</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="303" href="#303">303</a> <a href="../../../../../org/apache/hadoop/hbase/HTableDescriptor.html">HTableDescriptor</a> tableDesc = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="304" href="#304">304</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="305" href="#305">305</a> table = connection.getTable(region.getTable()); -<a class="jxr_linenumber" name="306" href="#306">306</a> tableDesc = table.getTableDescriptor(); -<a class="jxr_linenumber" name="307" href="#307">307</a> byte[] rowToCheck = region.getStartKey(); -<a class="jxr_linenumber" name="308" href="#308">308</a> <strong class="jxr_keyword">if</strong> (rowToCheck.length == 0) { -<a class="jxr_linenumber" name="309" href="#309">309</a> rowToCheck = <strong class="jxr_keyword">new</strong> byte[]{0x0}; -<a class="jxr_linenumber" name="310" href="#310">310</a> } -<a class="jxr_linenumber" name="311" href="#311">311</a> <strong class="jxr_keyword">int</strong> writeValueSize = -<a class="jxr_linenumber" name="312" href="#312">312</a> connection.getConfiguration().getInt(HConstants.HBASE_CANARY_WRITE_VALUE_SIZE_KEY, 10); -<a class="jxr_linenumber" name="313" href="#313">313</a> <strong class="jxr_keyword">for</strong> (HColumnDescriptor column : tableDesc.getColumnFamilies()) { -<a class="jxr_linenumber" name="314" href="#314">314</a> <a href="../../../../../org/apache/hadoop/hbase/client/Put.html">Put</a> put = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Put.html">Put</a>(rowToCheck); -<a class="jxr_linenumber" name="315" href="#315">315</a> byte[] value = <strong class="jxr_keyword">new</strong> byte[writeValueSize]; -<a class="jxr_linenumber" name="316" href="#316">316</a> Bytes.random(value); -<a class="jxr_linenumber" name="317" href="#317">317</a> put.addColumn(column.getName(), HConstants.EMPTY_BYTE_ARRAY, value); -<a class="jxr_linenumber" name="318" href="#318">318</a> -<a class="jxr_linenumber" name="319" href="#319">319</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { -<a class="jxr_linenumber" name="320" href="#320">320</a> LOG.debug(String.format(<span class="jxr_string">"writing to table %s region %s column family %s and key %s"</span>, -<a class="jxr_linenumber" name="321" href="#321">321</a> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(), -<a class="jxr_linenumber" name="322" href="#322">322</a> Bytes.toStringBinary(rowToCheck))); -<a class="jxr_linenumber" name="323" href="#323">323</a> } -<a class="jxr_linenumber" name="324" href="#324">324</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="325" href="#325">325</a> <strong class="jxr_keyword">long</strong> startTime = System.currentTimeMillis(); -<a class="jxr_linenumber" name="326" href="#326">326</a> table.put(put); -<a class="jxr_linenumber" name="327" href="#327">327</a> <strong class="jxr_keyword">long</strong> time = System.currentTimeMillis() - startTime; -<a class="jxr_linenumber" name="328" href="#328">328</a> sink.publishWriteTiming(region, column, time); -<a class="jxr_linenumber" name="329" href="#329">329</a> } <strong class="jxr_keyword">catch</strong> (Exception e) { -<a class="jxr_linenumber" name="330" href="#330">330</a> sink.publishWriteFailure(region, column, e); -<a class="jxr_linenumber" name="331" href="#331">331</a> } -<a class="jxr_linenumber" name="332" href="#332">332</a> } -<a class="jxr_linenumber" name="333" href="#333">333</a> table.close(); -<a class="jxr_linenumber" name="334" href="#334">334</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { -<a class="jxr_linenumber" name="335" href="#335">335</a> sink.publishWriteFailure(region, e); -<a class="jxr_linenumber" name="336" href="#336">336</a> } -<a class="jxr_linenumber" name="337" href="#337">337</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="268" href="#268">268</a> } +<a class="jxr_linenumber" name="269" href="#269">269</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="270" href="#270">270</a> table.close(); +<a class="jxr_linenumber" name="271" href="#271">271</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { +<a class="jxr_linenumber" name="272" href="#272">272</a> LOG.error(<span class="jxr_string">"Close table failed"</span>, e); +<a class="jxr_linenumber" name="273" href="#273">273</a> } +<a class="jxr_linenumber" name="274" href="#274">274</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="275" href="#275">275</a> } +<a class="jxr_linenumber" name="276" href="#276">276</a> +<a class="jxr_linenumber" name="277" href="#277">277</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_javadoccomment"> * Check writes for the canary table</em> +<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment"> * @return</em> +<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="281" href="#281">281</a> <strong class="jxr_keyword">private</strong> Void write() { +<a class="jxr_linenumber" name="282" href="#282">282</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; 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+<a class="jxr_linenumber" name="293" href="#293">293</a> <strong class="jxr_keyword">for</strong> (HColumnDescriptor column : tableDesc.getColumnFamilies()) { +<a class="jxr_linenumber" name="294" href="#294">294</a> <a href="../../../../../org/apache/hadoop/hbase/client/Put.html">Put</a> put = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Put.html">Put</a>(rowToCheck); +<a class="jxr_linenumber" name="295" href="#295">295</a> byte[] value = <strong class="jxr_keyword">new</strong> byte[writeValueSize]; +<a class="jxr_linenumber" name="296" href="#296">296</a> Bytes.random(value); +<a class="jxr_linenumber" name="297" href="#297">297</a> put.addColumn(column.getName(), HConstants.EMPTY_BYTE_ARRAY, value); +<a class="jxr_linenumber" name="298" href="#298">298</a> +<a class="jxr_linenumber" name="299" href="#299">299</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { +<a class="jxr_linenumber" name="300" href="#300">300</a> LOG.debug(String.format(<span class="jxr_string">"writing to table %s region %s column family %s and key %s"</span>, +<a class="jxr_linenumber" name="301" href="#301">301</a> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(), +<a class="jxr_linenumber" name="302" href="#302">302</a> Bytes.toStringBinary(rowToCheck))); +<a class="jxr_linenumber" name="303" href="#303">303</a> } +<a class="jxr_linenumber" name="304" href="#304">304</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="305" href="#305">305</a> <strong class="jxr_keyword">long</strong> startTime = System.currentTimeMillis(); +<a class="jxr_linenumber" name="306" href="#306">306</a> table.put(put); +<a class="jxr_linenumber" name="307" href="#307">307</a> <strong class="jxr_keyword">long</strong> time = System.currentTimeMillis() - startTime; +<a class="jxr_linenumber" name="308" href="#308">308</a> sink.publishWriteTiming(region, column, time); +<a class="jxr_linenumber" name="309" href="#309">309</a> } <strong class="jxr_keyword">catch</strong> (Exception e) { +<a class="jxr_linenumber" name="310" href="#310">310</a> sink.publishWriteFailure(region, column, e); +<a class="jxr_linenumber" name="311" href="#311">311</a> } +<a class="jxr_linenumber" name="312" href="#312">312</a> } +<a class="jxr_linenumber" name="313" href="#313">313</a> table.close(); +<a class="jxr_linenumber" name="314" href="#314">314</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { +<a class="jxr_linenumber" name="315" href="#315">315</a> sink.publishWriteFailure(region, e); +<a class="jxr_linenumber" name="316" href="#316">316</a> } +<a class="jxr_linenumber" name="317" href="#317">317</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="318" href="#318">318</a> } +<a class="jxr_linenumber" name="319" href="#319">319</a> } +<a class="jxr_linenumber" name="320" href="#320">320</a> +<a class="jxr_linenumber" name="321" href="#321">321</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="322" href="#322">322</a> <em class="jxr_javadoccomment"> * Get one row from a region on the regionserver and outputs the latency, or the failure.</em> +<a class="jxr_linenumber" name="323" href="#323">323</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="324" href="#324">324</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerTask</a> <strong class="jxr_keyword">implements</strong> Callable<Void> { +<a class="jxr_linenumber" name="325" href="#325">325</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection; +<a class="jxr_linenumber" name="326" href="#326">326</a> <strong class="jxr_keyword">private</strong> String serverName; +<a class="jxr_linenumber" name="327" href="#327">327</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region; +<a class="jxr_linenumber" name="328" href="#328">328</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> sink; +<a class="jxr_linenumber" name="329" href="#329">329</a> <strong class="jxr_keyword">private</strong> AtomicLong successes; +<a class="jxr_linenumber" name="330" href="#330">330</a> +<a class="jxr_linenumber" name="331" href="#331">331</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerTask</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection, String serverName, <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, +<a class="jxr_linenumber" name="332" href="#332">332</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> sink, AtomicLong successes) { +<a class="jxr_linenumber" name="333" href="#333">333</a> <strong class="jxr_keyword">this</strong>.connection = connection; +<a class="jxr_linenumber" name="334" href="#334">334</a> <strong class="jxr_keyword">this</strong>.serverName = serverName; +<a class="jxr_linenumber" name="335" href="#335">335</a> <strong class="jxr_keyword">this</strong>.region = region; +<a class="jxr_linenumber" name="336" href="#336">336</a> <strong class="jxr_keyword">this</strong>.sink = sink; +<a class="jxr_linenumber" name="337" href="#337">337</a> <strong class="jxr_keyword">this</strong>.successes = successes; <a class="jxr_linenumber" name="338" href="#338">338</a> } -<a class="jxr_linenumber" name="339" href="#339">339</a> } -<a class="jxr_linenumber" name="340" href="#340">340</a> -<a class="jxr_linenumber" name="341" href="#341">341</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="342" href="#342">342</a> <em class="jxr_javadoccomment"> * Get one row from a region on the regionserver and outputs the latency, or the failure.</em> -<a class="jxr_linenumber" name="343" href="#343">343</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="344" href="#344">344</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerTask</a> <strong class="jxr_keyword">implements</strong> Callable<Void> { -<a class="jxr_linenumber" name="345" href="#345">345</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection; -<a class="jxr_linenumber" name="346" href="#346">346</a> <strong class="jxr_keyword">private</strong> String serverName; -<a class="jxr_linenumber" name="347" href="#347">347</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region; -<a class="jxr_linenumber" name="348" href="#348">348</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> sink; -<a class="jxr_linenumber" name="349" href="#349">349</a> <strong class="jxr_keyword">private</strong> AtomicLong successes; -<a class="jxr_linenumber" name="350" href="#350">350</a> -<a class="jxr_linenumber" name="351" href="#351">351</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">RegionServerTask</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html">Connection</a> connection, String serverName, <a href="../../../../../org/apache/hadoop/hbase/HRegionInfo.html">HRegionInfo</a> region, -<a class="jxr_linenumber" name="352" href="#352">352</a> <a href="../../../../../org/apache/hadoop/hbase/tool/Canary.html">ExtendedSink</a> sink, AtomicLong successes) { -<a class="jxr_linenumber" name="353" href="#353">353</a> <strong class="jxr_keyword">this</strong>.connection = connection; -<a class="jxr_linenumber" name="354" href="#354">354</a> <strong class="jxr_keyword">this</strong>.serverName = serverName; -<a class="jxr_linenumber" name="355" href="#355">355</a> <strong class="jxr_keyword">this</strong>.region = region; -<a class="jxr_linenumber" name="356" href="#356">356</a> <strong class="jxr_keyword">this</strong>.sink = sink; -<a class="jxr_linenumber" name="357" href="#357">357</a> <strong class="jxr_keyword">this</strong>.successes = successes; -<a class="jxr_linenumber" name="358" href="#358">358</a> } -<a class="jxr_linenumber" name="359" href="#359">359</a> -<a class="jxr_linenumber" name="360" href="#360">360</a> @Override -<a class="jxr_linenumber" name="361" href="#361">361</a> <strong class="jxr_keyword">public</strong> Void call() { -<a class="jxr_linenumber" name="362" href="#362">362</a> <a href="../../../../../org/apache/hadoop/hbase/TableName.html">TableName</a> tableName = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="363" href="#363">363</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="364" href="#364">364</a> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a> get = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="365" href="#365">365</a> byte[] startKey = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="366" href="#366">366</a> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="367" href="#367">367</a> StopWatch stopWatch = <strong class="jxr_keyword">new</strong> StopWatch(); -<a class="jxr_linenumber" name="368" href="#368">368</a> <em class="jxr_comment">// monitor one region on every region server</em> -<a class="jxr_linenumber" name="369" href="#369">369</a> stopWatch.reset(); -<a class="jxr_linenumber" name="370" href="#370">370</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="371" href="#371">371</a> tableName = region.getTable(); -<a class="jxr_linenumber" name="372" href="#372">372</a> table = connection.getTable(tableName); -<a class="jxr_linenumber" name="373" href="#373">373</a> startKey = region.getStartKey(); -<a class="jxr_linenumber" name="374" href="#374">374</a> <em class="jxr_comment">// Can't do a get on empty start row so do a Scan of first element if any instead.</em> -<a class="jxr_linenumber" name="375" href="#375">375</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { -<a class="jxr_linenumber" name="376" href="#376">376</a> LOG.debug(String.format(<span class="jxr_string">"reading from region server %s table %s region %s and key %s"</span>, -<a class="jxr_linenumber" name="377" href="#377">377</a> serverName, region.getTable(), region.getRegionNameAsString(), -<a class="jxr_linenumber" name="378" href="#378">378</a> Bytes.toStringBinary(startKey))); +<a class="jxr_linenumber" name="339" href="#339">339</a> +<a class="jxr_linenumber" name="340" href="#340">340</a> @Override +<a class="jxr_linenumber" name="341" href="#341">341</a> <strong class="jxr_keyword">public</strong> Void call() { +<a class="jxr_linenumber" name="342" href="#342">342</a> <a href="../../../../../org/apache/hadoop/hbase/TableName.html">TableName</a> tableName = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="343" href="#343">343</a> <a href="../../../../../org/apache/hadoop/hbase/client/Table.html">Table</a> table = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="344" href="#344">344</a> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a> get = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="345" href="#345">345</a> byte[] startKey = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="346" href="#346">346</a> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a> scan = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="347" href="#347">347</a> StopWatch stopWatch = <strong class="jxr_keyword">new</strong> StopWatch(); +<a class="jxr_linenumber" name="348" href="#348">348</a> <em class="jxr_comment">// monitor one region on every region server</em> +<a class="jxr_linenumber" name="349" href="#349">349</a> stopWatch.reset(); +<a class="jxr_linenumber" name="350" href="#350">350</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="351" href="#351">351</a> tableName = region.getTable(); +<a class="jxr_linenumber" name="352" href="#352">352</a> table = connection.getTable(tableName); +<a class="jxr_linenumber" name="353" href="#353">353</a> startKey = region.getStartKey(); +<a class="jxr_linenumber" name="354" href="#354">354</a> <em class="jxr_comment">// Can't do a get on empty start row so do a Scan of first element if any instead.</em> +<a class="jxr_linenumber" name="355" href="#355">355</a> <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) { +<a class="jxr_linenumber" name="356" href="#356">356</a> LOG.debug(String.format(<span class="jxr_string">"reading from region server %s table %s region %s and key %s"</span>, +<a class="jxr_linenumber" name="357" href="#357">357</a> serverName, region.getTable(), region.getRegionNameAsString(), +<a class="jxr_linenumber" name="358" href="#358">358</a> Bytes.toStringBinary(startKey))); +<a class="jxr_linenumber" name="359" href="#359">359</a> } +<a class="jxr_linenumber" name="360" href="#360">360</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { +<a class="jxr_linenumber" name="361" href="#361">361</a> get = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a>(startKey); +<a class="jxr_linenumber" name="362" href="#362">362</a> get.setCacheBlocks(false); +<a class="jxr_linenumber" name="363" href="#363">363</a> get.setFilter(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/filter/FirstKeyOnlyFilter.html">FirstKeyOnlyFilter</a>()); +<a class="jxr_linenumber" name="364" href="#364">364</a> stopWatch.start(); +<a class="jxr_linenumber" name="365" href="#365">365</a> table.get(get); +<a class="jxr_linenumber" name="366" href="#366">366</a> stopWatch.stop(); +<a class="jxr_linenumber" name="367" href="#367">367</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="368" href="#368">368</a> scan = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a>(); 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<a class="jxr_linenumber" name="379" href="#379">379</a> } -<a class="jxr_linenumber" name="380" href="#380">380</a> <strong class="jxr_keyword">if</strong> (startKey.length > 0) { -<a class="jxr_linenumber" name="381" href="#381">381</a> get = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Get.html">Get</a>(startKey); -<a class="jxr_linenumber" name="382" href="#382">382</a> get.setCacheBlocks(false); -<a class="jxr_linenumber" name="383" href="#383">383</a> get.setFilter(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/filter/FirstKeyOnlyFilter.html">FirstKeyOnlyFilter</a>()); -<a class="jxr_linenumber" name="384" href="#384">384</a> stopWatch.start(); -<a class="jxr_linenumber" name="385" href="#385">385</a> table.get(get); -<a class="jxr_linenumber" name="386" href="#386">386</a> stopWatch.stop(); -<a class="jxr_linenumber" name="387" href="#387">387</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="388" href="#388">388</a> scan = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html">Scan</a>(); -<a class="jxr_linenumber" name="389" href="#389">389</a> scan.setCacheBlocks(false); -<a class="jxr_linenumber" name="390" href="#390">390</a> scan.setFilter(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/filter/FirstKeyOnlyFilter.html">FirstKeyOnlyFilter</a>()); -<a class="jxr_linenumber" name="391" href="#391">391</a> scan.setCaching(1); -<a class="jxr_linenumber" name="392" href="#392">392</a> scan.setMaxResultSize(1L); -<a class="jxr_linenumber" name="393" href="#393">393</a> scan.setSmall(<strong class="jxr_keyword">true</strong>); -<a class="jxr_linenumber" name="394" href="#394">394</a> stopWatch.start(); -<a class="jxr_linenumber" name="395" href="#395">395</a> <a href="../../../../../org/apache/hadoop/hbase/client/ResultScanner.html">ResultScanner</a> s = table.getScanner(scan); -<a class="jxr_linenumber" name="396" href="#396">396</a> s.next(); -<a class="jxr_linenumber" name="397" href="#397">397</a> s.close(); -<a class="jxr_linenumber" name="398" href="#398">398</a> stopWatch.stop(); -<a class="jxr_linenumber" name="399" href="#399">399</a> } -<a class="jxr_linenumber" name="400" href="#400">400</a> successes.incrementAndGet(); -<a class="jxr_linenumber" name="401" href="#401">401</a> sink.publishReadTiming(tableName.getNameAsString(), serverName, stopWatch.getTime()); -<a class="jxr_linenumber" name="402" href="#402">402</a> } <strong class="jxr_keyword">catch</strong> (TableNotFoundException tnfe) { -<a class="jxr_linenumber" name="403" href="#403">403</a> LOG.error(<span class="jxr_string">"Table may be deleted"</span>, tnfe); -<a class="jxr_linenumber" name="404" href="#404">404</a> <em class="jxr_comment">// This is ignored because it doesn't imply that the regionserver is dead</em> -<a class="jxr_linenumber" name="405" href="#405">405</a> } <strong class="jxr_keyword">catch</strong> (TableNotEnabledException tnee) { -<a class="jxr_linenumber" name="406" href="#406">406</a> <em class="jxr_comment">// This is considered a success since we got a response.</em> -<a class="jxr_linenumber" name="407" href="#407">407</a> successes.incrementAndGet(); -<a class="jxr_linenumber" name="408" href="#408">408</a> LOG.debug(<span class="jxr_string">"The targeted table was disabled. Assuming success."</span>); -<a class="jxr_linenumber" name="409" href="#409">409</a> } <strong class="jxr_keyword">catch</strong> (DoNotRetryIOException dnrioe) { -<a class="jxr_linenumber" name="410" href="#410">410</a> sink.publishReadFailure(tableName.getNameAsString(), serverName); -<a class="jxr_linenumber" name="411" href="#411">411</a> LOG.error(dnrioe); -<a class="jxr_linenumber" name="412" href="#412">412</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { -<a class="jxr_linenumber" name="413" href="#413">413</a> sink.publishReadFailure(tableName.getNameAsString(), serverName); -<a class="jxr_linenumber" name="414" href="#414">414</a> LOG.error(e); -<a class="jxr_linenumber" name="415" href="#415">415</a> } <strong class="jxr_keyword">finally</strong> { -<a class="jxr_linenumber" name="416" href="#416">416</a> <strong class="jxr_keyword">if</strong> (table != <strong class="jxr_keyword">null</strong>) { -<a class="jxr_linenumber" name="417" href="#417">417</a> <strong class="jxr_keyword">try</strong> { -<a class="jxr_linenumber" name="418" href="#418">418</a> table.close(); -<a class="jxr_linenumber" name="419" href="#419">419</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {<em class="jxr_comment">/*<em class="jxr_comment"> DO NOTHING */</em></em> -<a class="jxr_linenumber" name="420" href="#420">420</a> LOG.error(<span class="jxr_string">"Close table failed"</span>, e); -<a class="jxr_linenumber" name="421" href="#421">421</a> } -<a class="jxr_linenumber" name="422" href="#422">422</a> } -<a class="jxr_linenumber" name="423" href="#423">423</a> scan = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="424" href="#424">424</a> get = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="425" href="#425">425</a> startKey = <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="426" href="#426">426</a> } -<a class="jxr_linenumber" name="427" href="#427">427</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; -<a class="jxr_linenumber" name="428" href="#428">428</a> } -<a class="jxr_linenumber" name="429" href="#429">429</a> } -<a class="jxr_linenumber" name="430" href="#430">430</a> -<a class="jxr_linenumber" name="431" href="#431">431</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> USAGE_EXIT_CODE = 1; -<a class="jxr_linenumber" name="432" href="#432">432</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> INIT_ERROR_EXIT_CODE = 2; -<a class="jxr_linenumber" name="433" href="#433">433</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> TIMEOUT_ERROR_EXIT_CODE = 3; -<a class="jxr_linenumber" name="434" href="#434">434</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ERROR_EXIT_CODE = 4; -<a class="jxr_linenumber" name="435" href="#435">435</a> -<a class="jxr_linenumber" name="436" href="#436">436</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> DEFAULT_INTERVAL = 6000; -<a class="jxr_linenumber" name="437" href="#437">437</a> -<a class="jxr_linenumber" name="438" href="#438">438</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> DEFAULT_TIMEOUT = 600000; <em class="jxr_comment">// 10 mins</em> -<a class="jxr_linenumber" name="439" href="#439">439</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_THREADS_NUM = 16; <em class="jxr_comment">// #threads to contact regions</em> -<a class="jxr_linenumber" name="440" href="#440">440</a> -<a class="jxr_linenumber" name="441" href="#441">441</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(Canary.<strong class="jxr_keyword">class</strong>); -<a class="jxr_linenumber" name="442" href="#442">442</a> -<a class="jxr_linenumber" name="443" href="#443">443</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/hadoop/hbase/TableName.html">TableName</a> DEFAULT_WRITE_TABLE_NAME = TableName.valueOf( -<a class="jxr_linenumber" name="444" href="#444">444</a> NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR, <span class="jxr_string">"canary"</span>); +<a class="jxr_linenumber" name="380" href="#380">380</a> successes.incrementAndGet(); +<a class="jxr_linenumber" name="381" href="#381">381</a> sink.publishReadTiming(tableName.getNameAsString(), serverName, stopWatch.getTime()); +<a class="jxr_linenumber" name="382" href="#382">382</a> } <strong class="jxr_keyword">catch</strong> (TableNotFoundException tnfe) { +<a class="jxr_linenumber" name="383" href="#383">383</a> LOG.error(<span class="jxr_string">"Table may be deleted"</span>, tnfe); +<a class="jxr_linenumber" name="384" href="#384">384</a> <em class="jxr_comment">// This is ignored because it doesn't imply that the regionserver is dead</em> +<a class="jxr_linenumber" name="385" href="#385">385</a> } <strong class="jxr_keyword">catch</strong> (TableNotEnabledException tnee) { +<a class="jxr_linenumber" name="386" href="#386">386</a> <em class="jxr_comment">// This is considered a success since we got a response.</em> +<a class="jxr_linenumber" name="387" href="#387">387</a> successes.incrementAndGet(); +<a class="jxr_linenumber" name="388" href="#388">388</a> LOG.debug(<span class="jxr_string">"The targeted table was disabled. Assuming success."</span>); +<a class="jxr_linenumber" name="389" href="#389">389</a> } <strong class="jxr_keyword">catch</strong> (DoNotRetryIOException dnrioe) { +<a class="jxr_linenumber" name="390" href="#390">390</a> sink.publishReadFailure(tableName.getNameAsString(), serverName); +<a class="jxr_linenumber" name="391" href="#391">391</a> LOG.error(dnrioe); +<a class="jxr_linenumber" name="392" href="#392">392</a> } <strong class="jxr_keyword">catch</strong> (IOException e) { +<a class="jxr_linenumber" name="393" href="#393">393</a> sink.publishReadFailure(tableName.getNameAsString(), serverName); +<a class="jxr_linenumber" name="394" href="#394">394</a> LOG.error(e); +<a class="jxr_linenumber" name="395" href="#395">395</a> } <strong class="jxr_keyword">finally</strong> { +<a class="jxr_linenumber" name="396" href="#396">396</a> <strong class="jxr_keyword">if</strong> (table != <strong class="jxr_keyword">null</strong>) { +<a class="jxr_linenumber" name="397" href="#397">397</a> <strong class="jxr_keyword">try</strong> { +<a class="jxr_linenumber" name="398" href="#398">398</a> table.close(); +<a class="jxr_linenumber" name="399" href="#399">399</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {<em class="jxr_comment">/*<em class="jxr_comment"> DO NOTHING */</em></em> +<a class="jxr_linenumber" name="400" href="#400">400</a> LOG.error(<span class="jxr_string">"Close table failed"</span>, e); +<a class="jxr_linenumber" name="401" href="#401">401</a> } +<a class="jxr_linenumber" name="402" href="#402">402</a> } +<a class="jxr_linenumber" name="403" href="#403">403</a> scan = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="404" href="#404">404</a> get = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="405" href="#405">405</a> startKey = <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="406" href="#406">406</a> } +<a class="jxr_linenumber" name="407" href="#407">407</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; +<a class="jxr_linenumber" name="408" href="#408">40 <TRUNCATED>
