hbase-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From git-site-r...@apache.org
Subject [19/51] [partial] hbase-site git commit: Published site at .
Date Tue, 10 Oct 2017 15:25:44 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/9e2ced84/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/RegionObserver.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/RegionObserver.html b/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/RegionObserver.html
index b04b996..054a674 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/RegionObserver.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/RegionObserver.html
@@ -36,1084 +36,1082 @@
 <span class="sourceLineNo">028</span>import org.apache.hadoop.fs.Path;<a name="line.28"></a>
 <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.Cell;<a name="line.29"></a>
 <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.CompareOperator;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.Append;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.Delete;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.Durability;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Get;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.Increment;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.Put;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.Result;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.filter.ByteArrayComparable;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.io.Reference;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.InternalScanner;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.KeyValueScanner;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.MiniBatchOperationInProgress;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.OperationStatus;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.Region.Operation;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.regionserver.RegionScanner;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.ScanType;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.regionserver.Store;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.regionserver.StoreFile;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.regionserver.StoreFileReader;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.regionserver.querymatcher.DeleteTracker;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.ImmutableList;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.wal.WALKey;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.66"></a>
-<span class="sourceLineNo">067</span><a name="line.67"></a>
-<span class="sourceLineNo">068</span>/**<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * Coprocessors implement this interface to observe and mediate client actions on the region.<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * &lt;p&gt;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * Since most implementations will be interested in only a subset of hooks, this class uses<a name="line.71"></a>
-<span class="sourceLineNo">072</span> * 'default' functions to avoid having to add unnecessary overrides. When the functions are<a name="line.72"></a>
-<span class="sourceLineNo">073</span> * non-empty, it's simply to satisfy the compiler by returning value of expected (non-void) type. It<a name="line.73"></a>
-<span class="sourceLineNo">074</span> * is done in a way that these default definitions act as no-op. So our suggestion to implementation<a name="line.74"></a>
-<span class="sourceLineNo">075</span> * would be to not call these 'default' methods from overrides.<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * &lt;p&gt;<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * &lt;h3&gt;Exception Handling&lt;/h3&gt;&lt;br&gt;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * For all functions, exception handling is done as follows:<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * &lt;ul&gt;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> * &lt;li&gt;Exceptions of type {@link IOException} are reported back to client.&lt;/li&gt;<a name="line.80"></a>
-<span class="sourceLineNo">081</span> * &lt;li&gt;For any other kind of exception:<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * &lt;ul&gt;<a name="line.82"></a>
-<span class="sourceLineNo">083</span> * &lt;li&gt;If the configuration {@link CoprocessorHost#ABORT_ON_ERROR_KEY} is set to true, then the<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * server aborts.&lt;/li&gt;<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * &lt;li&gt;Otherwise, coprocessor is removed from the server and<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * {@link org.apache.hadoop.hbase.DoNotRetryIOException} is returned to the client.&lt;/li&gt;<a name="line.86"></a>
-<span class="sourceLineNo">087</span> * &lt;/ul&gt;<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * &lt;/li&gt;<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * &lt;/ul&gt;<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * &lt;p&gt;<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * &lt;h3&gt;For Split Related Hooks&lt;/h3&gt; &lt;br&gt;<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * In hbase2/AMv2, master runs splits, so the split related hooks are moved to<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * {@link MasterObserver}.<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * &lt;p&gt;<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * &lt;h3&gt;Increment Column Value&lt;/h3&gt;&lt;br&gt;<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * We do not call this hook anymore.<a name="line.96"></a>
-<span class="sourceLineNo">097</span> */<a name="line.97"></a>
-<span class="sourceLineNo">098</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)<a name="line.98"></a>
-<span class="sourceLineNo">099</span>@InterfaceStability.Evolving<a name="line.99"></a>
-<span class="sourceLineNo">100</span>// TODO as method signatures need to break, update to<a name="line.100"></a>
-<span class="sourceLineNo">101</span>// ObserverContext&lt;? extends RegionCoprocessorEnvironment&gt;<a name="line.101"></a>
-<span class="sourceLineNo">102</span>// so we can use additional environment state that isn't exposed to coprocessors.<a name="line.102"></a>
-<span class="sourceLineNo">103</span>public interface RegionObserver {<a name="line.103"></a>
-<span class="sourceLineNo">104</span>  /** Mutation type for postMutationBeforeWAL hook */<a name="line.104"></a>
-<span class="sourceLineNo">105</span>  enum MutationType {<a name="line.105"></a>
-<span class="sourceLineNo">106</span>    APPEND, INCREMENT<a name="line.106"></a>
-<span class="sourceLineNo">107</span>  }<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span>  /**<a name="line.109"></a>
-<span class="sourceLineNo">110</span>   * Called before the region is reported as open to the master.<a name="line.110"></a>
-<span class="sourceLineNo">111</span>   * @param c the environment provided by the region server<a name="line.111"></a>
-<span class="sourceLineNo">112</span>   */<a name="line.112"></a>
-<span class="sourceLineNo">113</span>  default void preOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.113"></a>
-<span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span>  /**<a name="line.115"></a>
-<span class="sourceLineNo">116</span>   * Called after the region is reported as open to the master.<a name="line.116"></a>
-<span class="sourceLineNo">117</span>   * @param c the environment provided by the region server<a name="line.117"></a>
-<span class="sourceLineNo">118</span>   */<a name="line.118"></a>
-<span class="sourceLineNo">119</span>  default void postOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) {}<a name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span>  /**<a name="line.121"></a>
-<span class="sourceLineNo">122</span>   * Called after the log replay on the region is over.<a name="line.122"></a>
-<span class="sourceLineNo">123</span>   * @param c the environment provided by the region server<a name="line.123"></a>
-<span class="sourceLineNo">124</span>   */<a name="line.124"></a>
-<span class="sourceLineNo">125</span>  default void postLogReplay(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) {}<a name="line.125"></a>
-<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span>  /**<a name="line.127"></a>
-<span class="sourceLineNo">128</span>   * Called before a memstore is flushed to disk and prior to creating the scanner to read from<a name="line.128"></a>
-<span class="sourceLineNo">129</span>   * the memstore.  To override or modify how a memstore is flushed,<a name="line.129"></a>
-<span class="sourceLineNo">130</span>   * implementing classes can return a new scanner to provide the KeyValues to be<a name="line.130"></a>
-<span class="sourceLineNo">131</span>   * stored into the new {@code StoreFile} or null to perform the default processing.<a name="line.131"></a>
-<span class="sourceLineNo">132</span>   * Calling {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} has no<a name="line.132"></a>
-<span class="sourceLineNo">133</span>   * effect in this hook.<a name="line.133"></a>
-<span class="sourceLineNo">134</span>   * @param c the environment provided by the region server<a name="line.134"></a>
-<span class="sourceLineNo">135</span>   * @param store the store being flushed<a name="line.135"></a>
-<span class="sourceLineNo">136</span>   * @param scanners the scanners for the memstore that is flushed<a name="line.136"></a>
-<span class="sourceLineNo">137</span>   * @param s the base scanner, if not {@code null}, from previous RegionObserver in the chain<a name="line.137"></a>
-<span class="sourceLineNo">138</span>   * @param readPoint the readpoint to create scanner<a name="line.138"></a>
-<span class="sourceLineNo">139</span>   * @return the scanner to use during the flush.  {@code null} if the default implementation<a name="line.139"></a>
-<span class="sourceLineNo">140</span>   * is to be used.<a name="line.140"></a>
-<span class="sourceLineNo">141</span>   */<a name="line.141"></a>
-<span class="sourceLineNo">142</span>  default InternalScanner preFlushScannerOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.142"></a>
-<span class="sourceLineNo">143</span>      Store store, List&lt;KeyValueScanner&gt; scanners, InternalScanner s, long readPoint)<a name="line.143"></a>
-<span class="sourceLineNo">144</span>      throws IOException {<a name="line.144"></a>
-<span class="sourceLineNo">145</span>    return s;<a name="line.145"></a>
-<span class="sourceLineNo">146</span>  }<a name="line.146"></a>
-<span class="sourceLineNo">147</span><a name="line.147"></a>
-<span class="sourceLineNo">148</span>  /**<a name="line.148"></a>
-<span class="sourceLineNo">149</span>   * Called before the memstore is flushed to disk.<a name="line.149"></a>
-<span class="sourceLineNo">150</span>   * @param c the environment provided by the region server<a name="line.150"></a>
-<span class="sourceLineNo">151</span>   */<a name="line.151"></a>
-<span class="sourceLineNo">152</span>  default void preFlush(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span>  /**<a name="line.154"></a>
-<span class="sourceLineNo">155</span>   * Called before a Store's memstore is flushed to disk.<a name="line.155"></a>
-<span class="sourceLineNo">156</span>   * @param c the environment provided by the region server<a name="line.156"></a>
-<span class="sourceLineNo">157</span>   * @param store the store where compaction is being requested<a name="line.157"></a>
-<span class="sourceLineNo">158</span>   * @param scanner the scanner over existing data used in the store file<a name="line.158"></a>
-<span class="sourceLineNo">159</span>   * @return the scanner to use during compaction.  Should not be {@code null}<a name="line.159"></a>
-<span class="sourceLineNo">160</span>   * unless the implementation is writing new store files on its own.<a name="line.160"></a>
-<span class="sourceLineNo">161</span>   */<a name="line.161"></a>
-<span class="sourceLineNo">162</span>  default InternalScanner preFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.162"></a>
-<span class="sourceLineNo">163</span>      InternalScanner scanner) throws IOException {<a name="line.163"></a>
-<span class="sourceLineNo">164</span>    return scanner;<a name="line.164"></a>
-<span class="sourceLineNo">165</span>  }<a name="line.165"></a>
-<span class="sourceLineNo">166</span><a name="line.166"></a>
-<span class="sourceLineNo">167</span>  /**<a name="line.167"></a>
-<span class="sourceLineNo">168</span>   * Called after the memstore is flushed to disk.<a name="line.168"></a>
-<span class="sourceLineNo">169</span>   * @param c the environment provided by the region server<a name="line.169"></a>
-<span class="sourceLineNo">170</span>   * @throws IOException if an error occurred on the coprocessor<a name="line.170"></a>
-<span class="sourceLineNo">171</span>   */<a name="line.171"></a>
-<span class="sourceLineNo">172</span>  default void postFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.172"></a>
-<span class="sourceLineNo">173</span><a name="line.173"></a>
-<span class="sourceLineNo">174</span>  /**<a name="line.174"></a>
-<span class="sourceLineNo">175</span>   * Called after a Store's memstore is flushed to disk.<a name="line.175"></a>
-<span class="sourceLineNo">176</span>   * @param c the environment provided by the region server<a name="line.176"></a>
-<span class="sourceLineNo">177</span>   * @param store the store being flushed<a name="line.177"></a>
-<span class="sourceLineNo">178</span>   * @param resultFile the new store file written out during compaction<a name="line.178"></a>
-<span class="sourceLineNo">179</span>   */<a name="line.179"></a>
-<span class="sourceLineNo">180</span>  default void postFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.180"></a>
-<span class="sourceLineNo">181</span>      StoreFile resultFile) throws IOException {}<a name="line.181"></a>
-<span class="sourceLineNo">182</span><a name="line.182"></a>
-<span class="sourceLineNo">183</span>  /**<a name="line.183"></a>
-<span class="sourceLineNo">184</span>   * Called prior to selecting the {@link StoreFile StoreFiles} to compact from the list of<a name="line.184"></a>
-<span class="sourceLineNo">185</span>   * available candidates. To alter the files used for compaction, you may mutate the passed in list<a name="line.185"></a>
-<span class="sourceLineNo">186</span>   * of candidates.<a name="line.186"></a>
-<span class="sourceLineNo">187</span>   * @param c the environment provided by the region server<a name="line.187"></a>
-<span class="sourceLineNo">188</span>   * @param store the store where compaction is being requested<a name="line.188"></a>
-<span class="sourceLineNo">189</span>   * @param candidates the store files currently available for compaction<a name="line.189"></a>
-<span class="sourceLineNo">190</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.190"></a>
-<span class="sourceLineNo">191</span>   * @param request the requested compaction<a name="line.191"></a>
-<span class="sourceLineNo">192</span>   */<a name="line.192"></a>
-<span class="sourceLineNo">193</span>  default void preCompactSelection(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.193"></a>
-<span class="sourceLineNo">194</span>      List&lt;? extends StoreFile&gt; candidates, CompactionLifeCycleTracker tracker,<a name="line.194"></a>
-<span class="sourceLineNo">195</span>      CompactionRequest request) throws IOException {}<a name="line.195"></a>
-<span class="sourceLineNo">196</span><a name="line.196"></a>
-<span class="sourceLineNo">197</span>  /**<a name="line.197"></a>
-<span class="sourceLineNo">198</span>   * Called after the {@link StoreFile}s to compact have been selected from the available<a name="line.198"></a>
-<span class="sourceLineNo">199</span>   * candidates.<a name="line.199"></a>
-<span class="sourceLineNo">200</span>   * @param c the environment provided by the region server<a name="line.200"></a>
-<span class="sourceLineNo">201</span>   * @param store the store being compacted<a name="line.201"></a>
-<span class="sourceLineNo">202</span>   * @param selected the store files selected to compact<a name="line.202"></a>
-<span class="sourceLineNo">203</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.203"></a>
-<span class="sourceLineNo">204</span>   * @param request the requested compaction<a name="line.204"></a>
-<span class="sourceLineNo">205</span>   */<a name="line.205"></a>
-<span class="sourceLineNo">206</span>  default void postCompactSelection(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.206"></a>
-<span class="sourceLineNo">207</span>      ImmutableList&lt;? extends StoreFile&gt; selected, CompactionLifeCycleTracker tracker,<a name="line.207"></a>
-<span class="sourceLineNo">208</span>      CompactionRequest request) {}<a name="line.208"></a>
-<span class="sourceLineNo">209</span><a name="line.209"></a>
-<span class="sourceLineNo">210</span>  /**<a name="line.210"></a>
-<span class="sourceLineNo">211</span>   * Called prior to writing the {@link StoreFile}s selected for compaction into a new<a name="line.211"></a>
-<span class="sourceLineNo">212</span>   * {@code StoreFile}. To override or modify the compaction process, implementing classes have two<a name="line.212"></a>
-<span class="sourceLineNo">213</span>   * options:<a name="line.213"></a>
-<span class="sourceLineNo">214</span>   * &lt;ul&gt;<a name="line.214"></a>
-<span class="sourceLineNo">215</span>   * &lt;li&gt;Wrap the provided {@link InternalScanner} with a custom implementation that is returned<a name="line.215"></a>
-<span class="sourceLineNo">216</span>   * from this method. The custom scanner can then inspect<a name="line.216"></a>
-<span class="sourceLineNo">217</span>   *  {@link org.apache.hadoop.hbase.KeyValue}s from the wrapped scanner, applying its own<a name="line.217"></a>
-<span class="sourceLineNo">218</span>   *   policy to what gets written.&lt;/li&gt;<a name="line.218"></a>
-<span class="sourceLineNo">219</span>   * &lt;li&gt;Call {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} and provide a<a name="line.219"></a>
-<span class="sourceLineNo">220</span>   * custom implementation for writing of new {@link StoreFile}s. &lt;strong&gt;Note: any implementations<a name="line.220"></a>
-<span class="sourceLineNo">221</span>   * bypassing core compaction using this approach must write out new store files themselves or the<a name="line.221"></a>
-<span class="sourceLineNo">222</span>   * existing data will no longer be available after compaction.&lt;/strong&gt;&lt;/li&gt;<a name="line.222"></a>
-<span class="sourceLineNo">223</span>   * &lt;/ul&gt;<a name="line.223"></a>
-<span class="sourceLineNo">224</span>   * @param c the environment provided by the region server<a name="line.224"></a>
-<span class="sourceLineNo">225</span>   * @param store the store being compacted<a name="line.225"></a>
-<span class="sourceLineNo">226</span>   * @param scanner the scanner over existing data used in the store file rewriting<a name="line.226"></a>
-<span class="sourceLineNo">227</span>   * @param scanType type of Scan<a name="line.227"></a>
-<span class="sourceLineNo">228</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.228"></a>
-<span class="sourceLineNo">229</span>   * @param request the requested compaction<a name="line.229"></a>
-<span class="sourceLineNo">230</span>   * @return the scanner to use during compaction. Should not be {@code null} unless the<a name="line.230"></a>
-<span class="sourceLineNo">231</span>   *         implementation is writing new store files on its own.<a name="line.231"></a>
-<span class="sourceLineNo">232</span>   */<a name="line.232"></a>
-<span class="sourceLineNo">233</span>  default InternalScanner preCompact(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.233"></a>
-<span class="sourceLineNo">234</span>      InternalScanner scanner, ScanType scanType, CompactionLifeCycleTracker tracker,<a name="line.234"></a>
-<span class="sourceLineNo">235</span>      CompactionRequest request)<a name="line.235"></a>
-<span class="sourceLineNo">236</span>      throws IOException {<a name="line.236"></a>
-<span class="sourceLineNo">237</span>    return scanner;<a name="line.237"></a>
-<span class="sourceLineNo">238</span>  }<a name="line.238"></a>
-<span class="sourceLineNo">239</span><a name="line.239"></a>
-<span class="sourceLineNo">240</span>  /**<a name="line.240"></a>
-<span class="sourceLineNo">241</span>   * Called prior to writing the {@link StoreFile}s selected for compaction into a new<a name="line.241"></a>
-<span class="sourceLineNo">242</span>   * {@code StoreFile} and prior to creating the scanner used to read the input files. To override<a name="line.242"></a>
-<span class="sourceLineNo">243</span>   * or modify the compaction process, implementing classes can return a new scanner to provide the<a name="line.243"></a>
-<span class="sourceLineNo">244</span>   * KeyValues to be stored into the new {@code StoreFile} or null to perform the default<a name="line.244"></a>
-<span class="sourceLineNo">245</span>   * processing. Calling {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} has no<a name="line.245"></a>
-<span class="sourceLineNo">246</span>   * effect in this hook.<a name="line.246"></a>
-<span class="sourceLineNo">247</span>   * @param c the environment provided by the region server<a name="line.247"></a>
-<span class="sourceLineNo">248</span>   * @param store the store being compacted<a name="line.248"></a>
-<span class="sourceLineNo">249</span>   * @param scanners the list of store file scanners to be read from<a name="line.249"></a>
-<span class="sourceLineNo">250</span>   * @param scanType the {@link ScanType} indicating whether this is a major or minor compaction<a name="line.250"></a>
-<span class="sourceLineNo">251</span>   * @param earliestPutTs timestamp of the earliest put that was found in any of the involved store<a name="line.251"></a>
-<span class="sourceLineNo">252</span>   *          files<a name="line.252"></a>
-<span class="sourceLineNo">253</span>   * @param s the base scanner, if not {@code null}, from previous RegionObserver in the chain<a name="line.253"></a>
-<span class="sourceLineNo">254</span>   * @param tracker used to track the life cycle of a compaction<a name="line.254"></a>
-<span class="sourceLineNo">255</span>   * @param request the requested compaction<a name="line.255"></a>
-<span class="sourceLineNo">256</span>   * @param readPoint the readpoint to create scanner<a name="line.256"></a>
-<span class="sourceLineNo">257</span>   * @return the scanner to use during compaction. {@code null} if the default implementation is to<a name="line.257"></a>
-<span class="sourceLineNo">258</span>   *          be used.<a name="line.258"></a>
-<span class="sourceLineNo">259</span>   */<a name="line.259"></a>
-<span class="sourceLineNo">260</span>  default InternalScanner preCompactScannerOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.260"></a>
-<span class="sourceLineNo">261</span>      Store store, List&lt;? extends KeyValueScanner&gt; scanners, ScanType scanType, long earliestPutTs,<a name="line.261"></a>
-<span class="sourceLineNo">262</span>      InternalScanner s, CompactionLifeCycleTracker tracker, CompactionRequest request,<a name="line.262"></a>
-<span class="sourceLineNo">263</span>      long readPoint) throws IOException {<a name="line.263"></a>
-<span class="sourceLineNo">264</span>    return s;<a name="line.264"></a>
-<span class="sourceLineNo">265</span>  }<a name="line.265"></a>
-<span class="sourceLineNo">266</span><a name="line.266"></a>
-<span class="sourceLineNo">267</span>  /**<a name="line.267"></a>
-<span class="sourceLineNo">268</span>   * Called after compaction has completed and the new store file has been moved in to place.<a name="line.268"></a>
-<span class="sourceLineNo">269</span>   * @param c the environment provided by the region server<a name="line.269"></a>
-<span class="sourceLineNo">270</span>   * @param store the store being compacted<a name="line.270"></a>
-<span class="sourceLineNo">271</span>   * @param resultFile the new store file written out during compaction<a name="line.271"></a>
-<span class="sourceLineNo">272</span>   * @param tracker used to track the life cycle of a compaction<a name="line.272"></a>
-<span class="sourceLineNo">273</span>   * @param request the requested compaction<a name="line.273"></a>
-<span class="sourceLineNo">274</span>   */<a name="line.274"></a>
-<span class="sourceLineNo">275</span>  default void postCompact(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.275"></a>
-<span class="sourceLineNo">276</span>      StoreFile resultFile, CompactionLifeCycleTracker tracker, CompactionRequest request)<a name="line.276"></a>
-<span class="sourceLineNo">277</span>      throws IOException {}<a name="line.277"></a>
-<span class="sourceLineNo">278</span><a name="line.278"></a>
-<span class="sourceLineNo">279</span>  /**<a name="line.279"></a>
-<span class="sourceLineNo">280</span>   * Called before the region is reported as closed to the master.<a name="line.280"></a>
-<span class="sourceLineNo">281</span>   * @param c the environment provided by the region server<a name="line.281"></a>
-<span class="sourceLineNo">282</span>   * @param abortRequested true if the region server is aborting<a name="line.282"></a>
-<span class="sourceLineNo">283</span>   */<a name="line.283"></a>
-<span class="sourceLineNo">284</span>  default void preClose(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, boolean abortRequested)<a name="line.284"></a>
-<span class="sourceLineNo">285</span>      throws IOException {}<a name="line.285"></a>
-<span class="sourceLineNo">286</span><a name="line.286"></a>
-<span class="sourceLineNo">287</span>  /**<a name="line.287"></a>
-<span class="sourceLineNo">288</span>   * Called after the region is reported as closed to the master.<a name="line.288"></a>
-<span class="sourceLineNo">289</span>   * @param c the environment provided by the region server<a name="line.289"></a>
-<span class="sourceLineNo">290</span>   * @param abortRequested true if the region server is aborting<a name="line.290"></a>
-<span class="sourceLineNo">291</span>   */<a name="line.291"></a>
-<span class="sourceLineNo">292</span>  default void postClose(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, boolean abortRequested) {}<a name="line.292"></a>
-<span class="sourceLineNo">293</span><a name="line.293"></a>
-<span class="sourceLineNo">294</span>  /**<a name="line.294"></a>
-<span class="sourceLineNo">295</span>   * Called before the client performs a Get<a name="line.295"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.client.Append;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.Delete;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.Durability;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.Get;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Increment;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.Put;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.Result;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.filter.ByteArrayComparable;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.io.Reference;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.io.hfile.CacheConfig;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.InternalScanner;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.KeyValueScanner;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.MiniBatchOperationInProgress;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.OperationStatus;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.Region.Operation;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.RegionScanner;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.regionserver.ScanType;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.Store;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.regionserver.StoreFile;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.regionserver.StoreFileReader;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.regionserver.querymatcher.DeleteTracker;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.ImmutableList;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.wal.WALKey;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span>/**<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * Coprocessors implement this interface to observe and mediate client actions on the region.<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * &lt;p&gt;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * Since most implementations will be interested in only a subset of hooks, this class uses<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * 'default' functions to avoid having to add unnecessary overrides. When the functions are<a name="line.71"></a>
+<span class="sourceLineNo">072</span> * non-empty, it's simply to satisfy the compiler by returning value of expected (non-void) type. It<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * is done in a way that these default definitions act as no-op. So our suggestion to implementation<a name="line.73"></a>
+<span class="sourceLineNo">074</span> * would be to not call these 'default' methods from overrides.<a name="line.74"></a>
+<span class="sourceLineNo">075</span> * &lt;p&gt;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> * &lt;h3&gt;Exception Handling&lt;/h3&gt;&lt;br&gt;<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * For all functions, exception handling is done as follows:<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * &lt;ul&gt;<a name="line.78"></a>
+<span class="sourceLineNo">079</span> * &lt;li&gt;Exceptions of type {@link IOException} are reported back to client.&lt;/li&gt;<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * &lt;li&gt;For any other kind of exception:<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * &lt;ul&gt;<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * &lt;li&gt;If the configuration {@link CoprocessorHost#ABORT_ON_ERROR_KEY} is set to true, then the<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * server aborts.&lt;/li&gt;<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * &lt;li&gt;Otherwise, coprocessor is removed from the server and<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * {@link org.apache.hadoop.hbase.DoNotRetryIOException} is returned to the client.&lt;/li&gt;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * &lt;/ul&gt;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * &lt;/li&gt;<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * &lt;/ul&gt;<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * &lt;p&gt;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> * &lt;h3&gt;For Split Related Hooks&lt;/h3&gt; &lt;br&gt;<a name="line.90"></a>
+<span class="sourceLineNo">091</span> * In hbase2/AMv2, master runs splits, so the split related hooks are moved to<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * {@link MasterObserver}.<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * &lt;p&gt;<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * &lt;h3&gt;Increment Column Value&lt;/h3&gt;&lt;br&gt;<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * We do not call this hook anymore.<a name="line.95"></a>
+<span class="sourceLineNo">096</span> */<a name="line.96"></a>
+<span class="sourceLineNo">097</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)<a name="line.97"></a>
+<span class="sourceLineNo">098</span>@InterfaceStability.Evolving<a name="line.98"></a>
+<span class="sourceLineNo">099</span>// TODO as method signatures need to break, update to<a name="line.99"></a>
+<span class="sourceLineNo">100</span>// ObserverContext&lt;? extends RegionCoprocessorEnvironment&gt;<a name="line.100"></a>
+<span class="sourceLineNo">101</span>// so we can use additional environment state that isn't exposed to coprocessors.<a name="line.101"></a>
+<span class="sourceLineNo">102</span>public interface RegionObserver {<a name="line.102"></a>
+<span class="sourceLineNo">103</span>  /** Mutation type for postMutationBeforeWAL hook */<a name="line.103"></a>
+<span class="sourceLineNo">104</span>  enum MutationType {<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    APPEND, INCREMENT<a name="line.105"></a>
+<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span>  /**<a name="line.108"></a>
+<span class="sourceLineNo">109</span>   * Called before the region is reported as open to the master.<a name="line.109"></a>
+<span class="sourceLineNo">110</span>   * @param c the environment provided by the region server<a name="line.110"></a>
+<span class="sourceLineNo">111</span>   */<a name="line.111"></a>
+<span class="sourceLineNo">112</span>  default void preOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.112"></a>
+<span class="sourceLineNo">113</span><a name="line.113"></a>
+<span class="sourceLineNo">114</span>  /**<a name="line.114"></a>
+<span class="sourceLineNo">115</span>   * Called after the region is reported as open to the master.<a name="line.115"></a>
+<span class="sourceLineNo">116</span>   * @param c the environment provided by the region server<a name="line.116"></a>
+<span class="sourceLineNo">117</span>   */<a name="line.117"></a>
+<span class="sourceLineNo">118</span>  default void postOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) {}<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
+<span class="sourceLineNo">120</span>  /**<a name="line.120"></a>
+<span class="sourceLineNo">121</span>   * Called after the log replay on the region is over.<a name="line.121"></a>
+<span class="sourceLineNo">122</span>   * @param c the environment provided by the region server<a name="line.122"></a>
+<span class="sourceLineNo">123</span>   */<a name="line.123"></a>
+<span class="sourceLineNo">124</span>  default void postLogReplay(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) {}<a name="line.124"></a>
+<span class="sourceLineNo">125</span><a name="line.125"></a>
+<span class="sourceLineNo">126</span>  /**<a name="line.126"></a>
+<span class="sourceLineNo">127</span>   * Called before a memstore is flushed to disk and prior to creating the scanner to read from<a name="line.127"></a>
+<span class="sourceLineNo">128</span>   * the memstore.  To override or modify how a memstore is flushed,<a name="line.128"></a>
+<span class="sourceLineNo">129</span>   * implementing classes can return a new scanner to provide the KeyValues to be<a name="line.129"></a>
+<span class="sourceLineNo">130</span>   * stored into the new {@code StoreFile} or null to perform the default processing.<a name="line.130"></a>
+<span class="sourceLineNo">131</span>   * Calling {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} has no<a name="line.131"></a>
+<span class="sourceLineNo">132</span>   * effect in this hook.<a name="line.132"></a>
+<span class="sourceLineNo">133</span>   * @param c the environment provided by the region server<a name="line.133"></a>
+<span class="sourceLineNo">134</span>   * @param store the store being flushed<a name="line.134"></a>
+<span class="sourceLineNo">135</span>   * @param scanners the scanners for the memstore that is flushed<a name="line.135"></a>
+<span class="sourceLineNo">136</span>   * @param s the base scanner, if not {@code null}, from previous RegionObserver in the chain<a name="line.136"></a>
+<span class="sourceLineNo">137</span>   * @param readPoint the readpoint to create scanner<a name="line.137"></a>
+<span class="sourceLineNo">138</span>   * @return the scanner to use during the flush.  {@code null} if the default implementation<a name="line.138"></a>
+<span class="sourceLineNo">139</span>   * is to be used.<a name="line.139"></a>
+<span class="sourceLineNo">140</span>   */<a name="line.140"></a>
+<span class="sourceLineNo">141</span>  default InternalScanner preFlushScannerOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.141"></a>
+<span class="sourceLineNo">142</span>      Store store, List&lt;KeyValueScanner&gt; scanners, InternalScanner s, long readPoint)<a name="line.142"></a>
+<span class="sourceLineNo">143</span>      throws IOException {<a name="line.143"></a>
+<span class="sourceLineNo">144</span>    return s;<a name="line.144"></a>
+<span class="sourceLineNo">145</span>  }<a name="line.145"></a>
+<span class="sourceLineNo">146</span><a name="line.146"></a>
+<span class="sourceLineNo">147</span>  /**<a name="line.147"></a>
+<span class="sourceLineNo">148</span>   * Called before the memstore is flushed to disk.<a name="line.148"></a>
+<span class="sourceLineNo">149</span>   * @param c the environment provided by the region server<a name="line.149"></a>
+<span class="sourceLineNo">150</span>   */<a name="line.150"></a>
+<span class="sourceLineNo">151</span>  default void preFlush(final ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.151"></a>
+<span class="sourceLineNo">152</span><a name="line.152"></a>
+<span class="sourceLineNo">153</span>  /**<a name="line.153"></a>
+<span class="sourceLineNo">154</span>   * Called before a Store's memstore is flushed to disk.<a name="line.154"></a>
+<span class="sourceLineNo">155</span>   * @param c the environment provided by the region server<a name="line.155"></a>
+<span class="sourceLineNo">156</span>   * @param store the store where compaction is being requested<a name="line.156"></a>
+<span class="sourceLineNo">157</span>   * @param scanner the scanner over existing data used in the store file<a name="line.157"></a>
+<span class="sourceLineNo">158</span>   * @return the scanner to use during compaction.  Should not be {@code null}<a name="line.158"></a>
+<span class="sourceLineNo">159</span>   * unless the implementation is writing new store files on its own.<a name="line.159"></a>
+<span class="sourceLineNo">160</span>   */<a name="line.160"></a>
+<span class="sourceLineNo">161</span>  default InternalScanner preFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.161"></a>
+<span class="sourceLineNo">162</span>      InternalScanner scanner) throws IOException {<a name="line.162"></a>
+<span class="sourceLineNo">163</span>    return scanner;<a name="line.163"></a>
+<span class="sourceLineNo">164</span>  }<a name="line.164"></a>
+<span class="sourceLineNo">165</span><a name="line.165"></a>
+<span class="sourceLineNo">166</span>  /**<a name="line.166"></a>
+<span class="sourceLineNo">167</span>   * Called after the memstore is flushed to disk.<a name="line.167"></a>
+<span class="sourceLineNo">168</span>   * @param c the environment provided by the region server<a name="line.168"></a>
+<span class="sourceLineNo">169</span>   * @throws IOException if an error occurred on the coprocessor<a name="line.169"></a>
+<span class="sourceLineNo">170</span>   */<a name="line.170"></a>
+<span class="sourceLineNo">171</span>  default void postFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c) throws IOException {}<a name="line.171"></a>
+<span class="sourceLineNo">172</span><a name="line.172"></a>
+<span class="sourceLineNo">173</span>  /**<a name="line.173"></a>
+<span class="sourceLineNo">174</span>   * Called after a Store's memstore is flushed to disk.<a name="line.174"></a>
+<span class="sourceLineNo">175</span>   * @param c the environment provided by the region server<a name="line.175"></a>
+<span class="sourceLineNo">176</span>   * @param store the store being flushed<a name="line.176"></a>
+<span class="sourceLineNo">177</span>   * @param resultFile the new store file written out during compaction<a name="line.177"></a>
+<span class="sourceLineNo">178</span>   */<a name="line.178"></a>
+<span class="sourceLineNo">179</span>  default void postFlush(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.179"></a>
+<span class="sourceLineNo">180</span>      StoreFile resultFile) throws IOException {}<a name="line.180"></a>
+<span class="sourceLineNo">181</span><a name="line.181"></a>
+<span class="sourceLineNo">182</span>  /**<a name="line.182"></a>
+<span class="sourceLineNo">183</span>   * Called prior to selecting the {@link StoreFile StoreFiles} to compact from the list of<a name="line.183"></a>
+<span class="sourceLineNo">184</span>   * available candidates. To alter the files used for compaction, you may mutate the passed in list<a name="line.184"></a>
+<span class="sourceLineNo">185</span>   * of candidates.<a name="line.185"></a>
+<span class="sourceLineNo">186</span>   * @param c the environment provided by the region server<a name="line.186"></a>
+<span class="sourceLineNo">187</span>   * @param store the store where compaction is being requested<a name="line.187"></a>
+<span class="sourceLineNo">188</span>   * @param candidates the store files currently available for compaction<a name="line.188"></a>
+<span class="sourceLineNo">189</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.189"></a>
+<span class="sourceLineNo">190</span>   */<a name="line.190"></a>
+<span class="sourceLineNo">191</span>  default void preCompactSelection(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.191"></a>
+<span class="sourceLineNo">192</span>      List&lt;? extends StoreFile&gt; candidates, CompactionLifeCycleTracker tracker)<a name="line.192"></a>
+<span class="sourceLineNo">193</span>      throws IOException {}<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span>  /**<a name="line.195"></a>
+<span class="sourceLineNo">196</span>   * Called after the {@link StoreFile}s to compact have been selected from the available<a name="line.196"></a>
+<span class="sourceLineNo">197</span>   * candidates.<a name="line.197"></a>
+<span class="sourceLineNo">198</span>   * @param c the environment provided by the region server<a name="line.198"></a>
+<span class="sourceLineNo">199</span>   * @param store the store being compacted<a name="line.199"></a>
+<span class="sourceLineNo">200</span>   * @param selected the store files selected to compact<a name="line.200"></a>
+<span class="sourceLineNo">201</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.201"></a>
+<span class="sourceLineNo">202</span>   * @param request the requested compaction<a name="line.202"></a>
+<span class="sourceLineNo">203</span>   */<a name="line.203"></a>
+<span class="sourceLineNo">204</span>  default void postCompactSelection(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.204"></a>
+<span class="sourceLineNo">205</span>      ImmutableList&lt;? extends StoreFile&gt; selected, CompactionLifeCycleTracker tracker,<a name="line.205"></a>
+<span class="sourceLineNo">206</span>      CompactionRequest request) {}<a name="line.206"></a>
+<span class="sourceLineNo">207</span><a name="line.207"></a>
+<span class="sourceLineNo">208</span>  /**<a name="line.208"></a>
+<span class="sourceLineNo">209</span>   * Called prior to writing the {@link StoreFile}s selected for compaction into a new<a name="line.209"></a>
+<span class="sourceLineNo">210</span>   * {@code StoreFile}. To override or modify the compaction process, implementing classes have two<a name="line.210"></a>
+<span class="sourceLineNo">211</span>   * options:<a name="line.211"></a>
+<span class="sourceLineNo">212</span>   * &lt;ul&gt;<a name="line.212"></a>
+<span class="sourceLineNo">213</span>   * &lt;li&gt;Wrap the provided {@link InternalScanner} with a custom implementation that is returned<a name="line.213"></a>
+<span class="sourceLineNo">214</span>   * from this method. The custom scanner can then inspect<a name="line.214"></a>
+<span class="sourceLineNo">215</span>   *  {@link org.apache.hadoop.hbase.KeyValue}s from the wrapped scanner, applying its own<a name="line.215"></a>
+<span class="sourceLineNo">216</span>   *   policy to what gets written.&lt;/li&gt;<a name="line.216"></a>
+<span class="sourceLineNo">217</span>   * &lt;li&gt;Call {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} and provide a<a name="line.217"></a>
+<span class="sourceLineNo">218</span>   * custom implementation for writing of new {@link StoreFile}s. &lt;strong&gt;Note: any implementations<a name="line.218"></a>
+<span class="sourceLineNo">219</span>   * bypassing core compaction using this approach must write out new store files themselves or the<a name="line.219"></a>
+<span class="sourceLineNo">220</span>   * existing data will no longer be available after compaction.&lt;/strong&gt;&lt;/li&gt;<a name="line.220"></a>
+<span class="sourceLineNo">221</span>   * &lt;/ul&gt;<a name="line.221"></a>
+<span class="sourceLineNo">222</span>   * @param c the environment provided by the region server<a name="line.222"></a>
+<span class="sourceLineNo">223</span>   * @param store the store being compacted<a name="line.223"></a>
+<span class="sourceLineNo">224</span>   * @param scanner the scanner over existing data used in the store file rewriting<a name="line.224"></a>
+<span class="sourceLineNo">225</span>   * @param scanType type of Scan<a name="line.225"></a>
+<span class="sourceLineNo">226</span>   * @param tracker tracker used to track the life cycle of a compaction<a name="line.226"></a>
+<span class="sourceLineNo">227</span>   * @param request the requested compaction<a name="line.227"></a>
+<span class="sourceLineNo">228</span>   * @return the scanner to use during compaction. Should not be {@code null} unless the<a name="line.228"></a>
+<span class="sourceLineNo">229</span>   *         implementation is writing new store files on its own.<a name="line.229"></a>
+<span class="sourceLineNo">230</span>   */<a name="line.230"></a>
+<span class="sourceLineNo">231</span>  default InternalScanner preCompact(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.231"></a>
+<span class="sourceLineNo">232</span>      InternalScanner scanner, ScanType scanType, CompactionLifeCycleTracker tracker,<a name="line.232"></a>
+<span class="sourceLineNo">233</span>      CompactionRequest request)<a name="line.233"></a>
+<span class="sourceLineNo">234</span>      throws IOException {<a name="line.234"></a>
+<span class="sourceLineNo">235</span>    return scanner;<a name="line.235"></a>
+<span class="sourceLineNo">236</span>  }<a name="line.236"></a>
+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span>  /**<a name="line.238"></a>
+<span class="sourceLineNo">239</span>   * Called prior to writing the {@link StoreFile}s selected for compaction into a new<a name="line.239"></a>
+<span class="sourceLineNo">240</span>   * {@code StoreFile} and prior to creating the scanner used to read the input files. To override<a name="line.240"></a>
+<span class="sourceLineNo">241</span>   * or modify the compaction process, implementing classes can return a new scanner to provide the<a name="line.241"></a>
+<span class="sourceLineNo">242</span>   * KeyValues to be stored into the new {@code StoreFile} or null to perform the default<a name="line.242"></a>
+<span class="sourceLineNo">243</span>   * processing. Calling {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} has no<a name="line.243"></a>
+<span class="sourceLineNo">244</span>   * effect in this hook.<a name="line.244"></a>
+<span class="sourceLineNo">245</span>   * @param c the environment provided by the region server<a name="line.245"></a>
+<span class="sourceLineNo">246</span>   * @param store the store being compacted<a name="line.246"></a>
+<span class="sourceLineNo">247</span>   * @param scanners the list of store file scanners to be read from<a name="line.247"></a>
+<span class="sourceLineNo">248</span>   * @param scanType the {@link ScanType} indicating whether this is a major or minor compaction<a name="line.248"></a>
+<span class="sourceLineNo">249</span>   * @param earliestPutTs timestamp of the earliest put that was found in any of the involved store<a name="line.249"></a>
+<span class="sourceLineNo">250</span>   *          files<a name="line.250"></a>
+<span class="sourceLineNo">251</span>   * @param s the base scanner, if not {@code null}, from previous RegionObserver in the chain<a name="line.251"></a>
+<span class="sourceLineNo">252</span>   * @param tracker used to track the life cycle of a compaction<a name="line.252"></a>
+<span class="sourceLineNo">253</span>   * @param request the requested compaction<a name="line.253"></a>
+<span class="sourceLineNo">254</span>   * @param readPoint the readpoint to create scanner<a name="line.254"></a>
+<span class="sourceLineNo">255</span>   * @return the scanner to use during compaction. {@code null} if the default implementation is to<a name="line.255"></a>
+<span class="sourceLineNo">256</span>   *          be used.<a name="line.256"></a>
+<span class="sourceLineNo">257</span>   */<a name="line.257"></a>
+<span class="sourceLineNo">258</span>  default InternalScanner preCompactScannerOpen(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.258"></a>
+<span class="sourceLineNo">259</span>      Store store, List&lt;? extends KeyValueScanner&gt; scanners, ScanType scanType, long earliestPutTs,<a name="line.259"></a>
+<span class="sourceLineNo">260</span>      InternalScanner s, CompactionLifeCycleTracker tracker, CompactionRequest request,<a name="line.260"></a>
+<span class="sourceLineNo">261</span>      long readPoint) throws IOException {<a name="line.261"></a>
+<span class="sourceLineNo">262</span>    return s;<a name="line.262"></a>
+<span class="sourceLineNo">263</span>  }<a name="line.263"></a>
+<span class="sourceLineNo">264</span><a name="line.264"></a>
+<span class="sourceLineNo">265</span>  /**<a name="line.265"></a>
+<span class="sourceLineNo">266</span>   * Called after compaction has completed and the new store file has been moved in to place.<a name="line.266"></a>
+<span class="sourceLineNo">267</span>   * @param c the environment provided by the region server<a name="line.267"></a>
+<span class="sourceLineNo">268</span>   * @param store the store being compacted<a name="line.268"></a>
+<span class="sourceLineNo">269</span>   * @param resultFile the new store file written out during compaction<a name="line.269"></a>
+<span class="sourceLineNo">270</span>   * @param tracker used to track the life cycle of a compaction<a name="line.270"></a>
+<span class="sourceLineNo">271</span>   * @param request the requested compaction<a name="line.271"></a>
+<span class="sourceLineNo">272</span>   */<a name="line.272"></a>
+<span class="sourceLineNo">273</span>  default void postCompact(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Store store,<a name="line.273"></a>
+<span class="sourceLineNo">274</span>      StoreFile resultFile, CompactionLifeCycleTracker tracker, CompactionRequest request)<a name="line.274"></a>
+<span class="sourceLineNo">275</span>      throws IOException {}<a name="line.275"></a>
+<span class="sourceLineNo">276</span><a name="line.276"></a>
+<span class="sourceLineNo">277</span>  /**<a name="line.277"></a>
+<span class="sourceLineNo">278</span>   * Called before the region is reported as closed to the master.<a name="line.278"></a>
+<span class="sourceLineNo">279</span>   * @param c the environment provided by the region server<a name="line.279"></a>
+<span class="sourceLineNo">280</span>   * @param abortRequested true if the region server is aborting<a name="line.280"></a>
+<span class="sourceLineNo">281</span>   */<a name="line.281"></a>
+<span class="sourceLineNo">282</span>  default void preClose(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, boolean abortRequested)<a name="line.282"></a>
+<span class="sourceLineNo">283</span>      throws IOException {}<a name="line.283"></a>
+<span class="sourceLineNo">284</span><a name="line.284"></a>
+<span class="sourceLineNo">285</span>  /**<a name="line.285"></a>
+<span class="sourceLineNo">286</span>   * Called after the region is reported as closed to the master.<a name="line.286"></a>
+<span class="sourceLineNo">287</span>   * @param c the environment provided by the region server<a name="line.287"></a>
+<span class="sourceLineNo">288</span>   * @param abortRequested true if the region server is aborting<a name="line.288"></a>
+<span class="sourceLineNo">289</span>   */<a name="line.289"></a>
+<span class="sourceLineNo">290</span>  default void postClose(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, boolean abortRequested) {}<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span>  /**<a name="line.292"></a>
+<span class="sourceLineNo">293</span>   * Called before the client performs a Get<a name="line.293"></a>
+<span class="sourceLineNo">294</span>   * &lt;p&gt;<a name="line.294"></a>
+<span class="sourceLineNo">295</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.295"></a>
 <span class="sourceLineNo">296</span>   * &lt;p&gt;<a name="line.296"></a>
-<span class="sourceLineNo">297</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.297"></a>
-<span class="sourceLineNo">298</span>   * &lt;p&gt;<a name="line.298"></a>
-<span class="sourceLineNo">299</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.299"></a>
-<span class="sourceLineNo">300</span>   * coprocessors<a name="line.300"></a>
-<span class="sourceLineNo">301</span>   * @param c the environment provided by the region server<a name="line.301"></a>
-<span class="sourceLineNo">302</span>   * @param get the Get request<a name="line.302"></a>
-<span class="sourceLineNo">303</span>   * @param result The result to return to the client if default processing<a name="line.303"></a>
-<span class="sourceLineNo">304</span>   * is bypassed. Can be modified. Will not be used if default processing<a name="line.304"></a>
-<span class="sourceLineNo">305</span>   * is not bypassed.<a name="line.305"></a>
-<span class="sourceLineNo">306</span>   */<a name="line.306"></a>
-<span class="sourceLineNo">307</span>  default void preGetOp(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get, List&lt;Cell&gt; result)<a name="line.307"></a>
-<span class="sourceLineNo">308</span>      throws IOException {}<a name="line.308"></a>
-<span class="sourceLineNo">309</span><a name="line.309"></a>
-<span class="sourceLineNo">310</span>  /**<a name="line.310"></a>
-<span class="sourceLineNo">311</span>   * Called after the client performs a Get<a name="line.311"></a>
-<span class="sourceLineNo">312</span>   * &lt;p&gt;<a name="line.312"></a>
-<span class="sourceLineNo">313</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.313"></a>
-<span class="sourceLineNo">314</span>   * coprocessors<a name="line.314"></a>
-<span class="sourceLineNo">315</span>   * &lt;p&gt;<a name="line.315"></a>
-<span class="sourceLineNo">316</span>   * Note: Do not retain references to any Cells in 'result' beyond the life of this invocation.<a name="line.316"></a>
-<span class="sourceLineNo">317</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.317"></a>
-<span class="sourceLineNo">318</span>   * @param c the environment provided by the region server<a name="line.318"></a>
-<span class="sourceLineNo">319</span>   * @param get the Get request<a name="line.319"></a>
-<span class="sourceLineNo">320</span>   * @param result the result to return to the client, modify as necessary<a name="line.320"></a>
-<span class="sourceLineNo">321</span>   */<a name="line.321"></a>
-<span class="sourceLineNo">322</span>  default void postGetOp(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.322"></a>
-<span class="sourceLineNo">323</span>      List&lt;Cell&gt; result) throws IOException {}<a name="line.323"></a>
-<span class="sourceLineNo">324</span><a name="line.324"></a>
-<span class="sourceLineNo">325</span>  /**<a name="line.325"></a>
-<span class="sourceLineNo">326</span>   * Called before the client tests for existence using a Get.<a name="line.326"></a>
+<span class="sourceLineNo">297</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.297"></a>
+<span class="sourceLineNo">298</span>   * coprocessors<a name="line.298"></a>
+<span class="sourceLineNo">299</span>   * @param c the environment provided by the region server<a name="line.299"></a>
+<span class="sourceLineNo">300</span>   * @param get the Get request<a name="line.300"></a>
+<span class="sourceLineNo">301</span>   * @param result The result to return to the client if default processing<a name="line.301"></a>
+<span class="sourceLineNo">302</span>   * is bypassed. Can be modified. Will not be used if default processing<a name="line.302"></a>
+<span class="sourceLineNo">303</span>   * is not bypassed.<a name="line.303"></a>
+<span class="sourceLineNo">304</span>   */<a name="line.304"></a>
+<span class="sourceLineNo">305</span>  default void preGetOp(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get, List&lt;Cell&gt; result)<a name="line.305"></a>
+<span class="sourceLineNo">306</span>      throws IOException {}<a name="line.306"></a>
+<span class="sourceLineNo">307</span><a name="line.307"></a>
+<span class="sourceLineNo">308</span>  /**<a name="line.308"></a>
+<span class="sourceLineNo">309</span>   * Called after the client performs a Get<a name="line.309"></a>
+<span class="sourceLineNo">310</span>   * &lt;p&gt;<a name="line.310"></a>
+<span class="sourceLineNo">311</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.311"></a>
+<span class="sourceLineNo">312</span>   * coprocessors<a name="line.312"></a>
+<span class="sourceLineNo">313</span>   * &lt;p&gt;<a name="line.313"></a>
+<span class="sourceLineNo">314</span>   * Note: Do not retain references to any Cells in 'result' beyond the life of this invocation.<a name="line.314"></a>
+<span class="sourceLineNo">315</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.315"></a>
+<span class="sourceLineNo">316</span>   * @param c the environment provided by the region server<a name="line.316"></a>
+<span class="sourceLineNo">317</span>   * @param get the Get request<a name="line.317"></a>
+<span class="sourceLineNo">318</span>   * @param result the result to return to the client, modify as necessary<a name="line.318"></a>
+<span class="sourceLineNo">319</span>   */<a name="line.319"></a>
+<span class="sourceLineNo">320</span>  default void postGetOp(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.320"></a>
+<span class="sourceLineNo">321</span>      List&lt;Cell&gt; result) throws IOException {}<a name="line.321"></a>
+<span class="sourceLineNo">322</span><a name="line.322"></a>
+<span class="sourceLineNo">323</span>  /**<a name="line.323"></a>
+<span class="sourceLineNo">324</span>   * Called before the client tests for existence using a Get.<a name="line.324"></a>
+<span class="sourceLineNo">325</span>   * &lt;p&gt;<a name="line.325"></a>
+<span class="sourceLineNo">326</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.326"></a>
 <span class="sourceLineNo">327</span>   * &lt;p&gt;<a name="line.327"></a>
-<span class="sourceLineNo">328</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.328"></a>
-<span class="sourceLineNo">329</span>   * &lt;p&gt;<a name="line.329"></a>
-<span class="sourceLineNo">330</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.330"></a>
-<span class="sourceLineNo">331</span>   * coprocessors<a name="line.331"></a>
-<span class="sourceLineNo">332</span>   * @param c the environment provided by the region server<a name="line.332"></a>
-<span class="sourceLineNo">333</span>   * @param get the Get request<a name="line.333"></a>
-<span class="sourceLineNo">334</span>   * @param exists the result returned by the region server<a name="line.334"></a>
-<span class="sourceLineNo">335</span>   * @return the value to return to the client if bypassing default processing<a name="line.335"></a>
-<span class="sourceLineNo">336</span>   */<a name="line.336"></a>
-<span class="sourceLineNo">337</span>  default boolean preExists(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.337"></a>
-<span class="sourceLineNo">338</span>      boolean exists) throws IOException {<a name="line.338"></a>
-<span class="sourceLineNo">339</span>    return exists;<a name="line.339"></a>
-<span class="sourceLineNo">340</span>  }<a name="line.340"></a>
-<span class="sourceLineNo">341</span><a name="line.341"></a>
-<span class="sourceLineNo">342</span>  /**<a name="line.342"></a>
-<span class="sourceLineNo">343</span>   * Called after the client tests for existence using a Get.<a name="line.343"></a>
-<span class="sourceLineNo">344</span>   * &lt;p&gt;<a name="line.344"></a>
-<span class="sourceLineNo">345</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.345"></a>
-<span class="sourceLineNo">346</span>   * coprocessors<a name="line.346"></a>
-<span class="sourceLineNo">347</span>   * @param c the environment provided by the region server<a name="line.347"></a>
-<span class="sourceLineNo">348</span>   * @param get the Get request<a name="line.348"></a>
-<span class="sourceLineNo">349</span>   * @param exists the result returned by the region server<a name="line.349"></a>
-<span class="sourceLineNo">350</span>   * @return the result to return to the client<a name="line.350"></a>
-<span class="sourceLineNo">351</span>   */<a name="line.351"></a>
-<span class="sourceLineNo">352</span>  default boolean postExists(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.352"></a>
-<span class="sourceLineNo">353</span>      boolean exists) throws IOException {<a name="line.353"></a>
-<span class="sourceLineNo">354</span>    return exists;<a name="line.354"></a>
-<span class="sourceLineNo">355</span>  }<a name="line.355"></a>
-<span class="sourceLineNo">356</span><a name="line.356"></a>
-<span class="sourceLineNo">357</span>  /**<a name="line.357"></a>
-<span class="sourceLineNo">358</span>   * Called before the client stores a value.<a name="line.358"></a>
+<span class="sourceLineNo">328</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.328"></a>
+<span class="sourceLineNo">329</span>   * coprocessors<a name="line.329"></a>
+<span class="sourceLineNo">330</span>   * @param c the environment provided by the region server<a name="line.330"></a>
+<span class="sourceLineNo">331</span>   * @param get the Get request<a name="line.331"></a>
+<span class="sourceLineNo">332</span>   * @param exists the result returned by the region server<a name="line.332"></a>
+<span class="sourceLineNo">333</span>   * @return the value to return to the client if bypassing default processing<a name="line.333"></a>
+<span class="sourceLineNo">334</span>   */<a name="line.334"></a>
+<span class="sourceLineNo">335</span>  default boolean preExists(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.335"></a>
+<span class="sourceLineNo">336</span>      boolean exists) throws IOException {<a name="line.336"></a>
+<span class="sourceLineNo">337</span>    return exists;<a name="line.337"></a>
+<span class="sourceLineNo">338</span>  }<a name="line.338"></a>
+<span class="sourceLineNo">339</span><a name="line.339"></a>
+<span class="sourceLineNo">340</span>  /**<a name="line.340"></a>
+<span class="sourceLineNo">341</span>   * Called after the client tests for existence using a Get.<a name="line.341"></a>
+<span class="sourceLineNo">342</span>   * &lt;p&gt;<a name="line.342"></a>
+<span class="sourceLineNo">343</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.343"></a>
+<span class="sourceLineNo">344</span>   * coprocessors<a name="line.344"></a>
+<span class="sourceLineNo">345</span>   * @param c the environment provided by the region server<a name="line.345"></a>
+<span class="sourceLineNo">346</span>   * @param get the Get request<a name="line.346"></a>
+<span class="sourceLineNo">347</span>   * @param exists the result returned by the region server<a name="line.347"></a>
+<span class="sourceLineNo">348</span>   * @return the result to return to the client<a name="line.348"></a>
+<span class="sourceLineNo">349</span>   */<a name="line.349"></a>
+<span class="sourceLineNo">350</span>  default boolean postExists(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Get get,<a name="line.350"></a>
+<span class="sourceLineNo">351</span>      boolean exists) throws IOException {<a name="line.351"></a>
+<span class="sourceLineNo">352</span>    return exists;<a name="line.352"></a>
+<span class="sourceLineNo">353</span>  }<a name="line.353"></a>
+<span class="sourceLineNo">354</span><a name="line.354"></a>
+<span class="sourceLineNo">355</span>  /**<a name="line.355"></a>
+<span class="sourceLineNo">356</span>   * Called before the client stores a value.<a name="line.356"></a>
+<span class="sourceLineNo">357</span>   * &lt;p&gt;<a name="line.357"></a>
+<span class="sourceLineNo">358</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.358"></a>
 <span class="sourceLineNo">359</span>   * &lt;p&gt;<a name="line.359"></a>
-<span class="sourceLineNo">360</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.360"></a>
-<span class="sourceLineNo">361</span>   * &lt;p&gt;<a name="line.361"></a>
-<span class="sourceLineNo">362</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.362"></a>
-<span class="sourceLineNo">363</span>   * coprocessors<a name="line.363"></a>
-<span class="sourceLineNo">364</span>   * &lt;p&gt;<a name="line.364"></a>
-<span class="sourceLineNo">365</span>   * Note: Do not retain references to any Cells in 'put' beyond the life of this invocation.<a name="line.365"></a>
-<span class="sourceLineNo">366</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.366"></a>
-<span class="sourceLineNo">367</span>   * @param c the environment provided by the region server<a name="line.367"></a>
-<span class="sourceLineNo">368</span>   * @param put The Put object<a name="line.368"></a>
-<span class="sourceLineNo">369</span>   * @param edit The WALEdit object that will be written to the wal<a name="line.369"></a>
-<span class="sourceLineNo">370</span>   * @param durability Persistence guarantee for this Put<a name="line.370"></a>
-<span class="sourceLineNo">371</span>   */<a name="line.371"></a>
-<span class="sourceLineNo">372</span>  default void prePut(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Put put, WALEdit edit,<a name="line.372"></a>
-<span class="sourceLineNo">373</span>      Durability durability) throws IOException {}<a name="line.373"></a>
-<span class="sourceLineNo">374</span><a name="line.374"></a>
-<span class="sourceLineNo">375</span>  /**<a name="line.375"></a>
-<span class="sourceLineNo">376</span>   * Called after the client stores a value.<a name="line.376"></a>
-<span class="sourceLineNo">377</span>   * &lt;p&gt;<a name="line.377"></a>
-<span class="sourceLineNo">378</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.378"></a>
-<span class="sourceLineNo">379</span>   * coprocessors<a name="line.379"></a>
-<span class="sourceLineNo">380</span>   * &lt;p&gt;<a name="line.380"></a>
-<span class="sourceLineNo">381</span>   * Note: Do not retain references to any Cells in 'put' beyond the life of this invocation.<a name="line.381"></a>
-<span class="sourceLineNo">382</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.382"></a>
-<span class="sourceLineNo">383</span>   * @param c the environment provided by the region server<a name="line.383"></a>
-<span class="sourceLineNo">384</span>   * @param put The Put object<a name="line.384"></a>
-<span class="sourceLineNo">385</span>   * @param edit The WALEdit object for the wal<a name="line.385"></a>
-<span class="sourceLineNo">386</span>   * @param durability Persistence guarantee for this Put<a name="line.386"></a>
-<span class="sourceLineNo">387</span>   */<a name="line.387"></a>
-<span class="sourceLineNo">388</span>  default void postPut(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Put put, WALEdit edit,<a name="line.388"></a>
-<span class="sourceLineNo">389</span>      Durability durability) throws IOException {}<a name="line.389"></a>
-<span class="sourceLineNo">390</span><a name="line.390"></a>
-<span class="sourceLineNo">391</span>  /**<a name="line.391"></a>
-<span class="sourceLineNo">392</span>   * Called before the client deletes a value.<a name="line.392"></a>
+<span class="sourceLineNo">360</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.360"></a>
+<span class="sourceLineNo">361</span>   * coprocessors<a name="line.361"></a>
+<span class="sourceLineNo">362</span>   * &lt;p&gt;<a name="line.362"></a>
+<span class="sourceLineNo">363</span>   * Note: Do not retain references to any Cells in 'put' beyond the life of this invocation.<a name="line.363"></a>
+<span class="sourceLineNo">364</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.364"></a>
+<span class="sourceLineNo">365</span>   * @param c the environment provided by the region server<a name="line.365"></a>
+<span class="sourceLineNo">366</span>   * @param put The Put object<a name="line.366"></a>
+<span class="sourceLineNo">367</span>   * @param edit The WALEdit object that will be written to the wal<a name="line.367"></a>
+<span class="sourceLineNo">368</span>   * @param durability Persistence guarantee for this Put<a name="line.368"></a>
+<span class="sourceLineNo">369</span>   */<a name="line.369"></a>
+<span class="sourceLineNo">370</span>  default void prePut(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Put put, WALEdit edit,<a name="line.370"></a>
+<span class="sourceLineNo">371</span>      Durability durability) throws IOException {}<a name="line.371"></a>
+<span class="sourceLineNo">372</span><a name="line.372"></a>
+<span class="sourceLineNo">373</span>  /**<a name="line.373"></a>
+<span class="sourceLineNo">374</span>   * Called after the client stores a value.<a name="line.374"></a>
+<span class="sourceLineNo">375</span>   * &lt;p&gt;<a name="line.375"></a>
+<span class="sourceLineNo">376</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.376"></a>
+<span class="sourceLineNo">377</span>   * coprocessors<a name="line.377"></a>
+<span class="sourceLineNo">378</span>   * &lt;p&gt;<a name="line.378"></a>
+<span class="sourceLineNo">379</span>   * Note: Do not retain references to any Cells in 'put' beyond the life of this invocation.<a name="line.379"></a>
+<span class="sourceLineNo">380</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.380"></a>
+<span class="sourceLineNo">381</span>   * @param c the environment provided by the region server<a name="line.381"></a>
+<span class="sourceLineNo">382</span>   * @param put The Put object<a name="line.382"></a>
+<span class="sourceLineNo">383</span>   * @param edit The WALEdit object for the wal<a name="line.383"></a>
+<span class="sourceLineNo">384</span>   * @param durability Persistence guarantee for this Put<a name="line.384"></a>
+<span class="sourceLineNo">385</span>   */<a name="line.385"></a>
+<span class="sourceLineNo">386</span>  default void postPut(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Put put, WALEdit edit,<a name="line.386"></a>
+<span class="sourceLineNo">387</span>      Durability durability) throws IOException {}<a name="line.387"></a>
+<span class="sourceLineNo">388</span><a name="line.388"></a>
+<span class="sourceLineNo">389</span>  /**<a name="line.389"></a>
+<span class="sourceLineNo">390</span>   * Called before the client deletes a value.<a name="line.390"></a>
+<span class="sourceLineNo">391</span>   * &lt;p&gt;<a name="line.391"></a>
+<span class="sourceLineNo">392</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.392"></a>
 <span class="sourceLineNo">393</span>   * &lt;p&gt;<a name="line.393"></a>
-<span class="sourceLineNo">394</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.394"></a>
-<span class="sourceLineNo">395</span>   * &lt;p&gt;<a name="line.395"></a>
-<span class="sourceLineNo">396</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.396"></a>
-<span class="sourceLineNo">397</span>   * coprocessors<a name="line.397"></a>
-<span class="sourceLineNo">398</span>   * &lt;p&gt;<a name="line.398"></a>
-<span class="sourceLineNo">399</span>   * Note: Do not retain references to any Cells in 'delete' beyond the life of this invocation.<a name="line.399"></a>
-<span class="sourceLineNo">400</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.400"></a>
-<span class="sourceLineNo">401</span>   * @param c the environment provided by the region server<a name="line.401"></a>
-<span class="sourceLineNo">402</span>   * @param delete The Delete object<a name="line.402"></a>
-<span class="sourceLineNo">403</span>   * @param edit The WALEdit object for the wal<a name="line.403"></a>
-<span class="sourceLineNo">404</span>   * @param durability Persistence guarantee for this Delete<a name="line.404"></a>
-<span class="sourceLineNo">405</span>   */<a name="line.405"></a>
-<span class="sourceLineNo">406</span>  default void preDelete(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Delete delete,<a name="line.406"></a>
-<span class="sourceLineNo">407</span>      WALEdit edit, Durability durability) throws IOException {}<a name="line.407"></a>
-<span class="sourceLineNo">408</span><a name="line.408"></a>
-<span class="sourceLineNo">409</span>  /**<a name="line.409"></a>
-<span class="sourceLineNo">410</span>   * Called before the server updates the timestamp for version delete with latest timestamp.<a name="line.410"></a>
+<span class="sourceLineNo">394</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.394"></a>
+<span class="sourceLineNo">395</span>   * coprocessors<a name="line.395"></a>
+<span class="sourceLineNo">396</span>   * &lt;p&gt;<a name="line.396"></a>
+<span class="sourceLineNo">397</span>   * Note: Do not retain references to any Cells in 'delete' beyond the life of this invocation.<a name="line.397"></a>
+<span class="sourceLineNo">398</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.398"></a>
+<span class="sourceLineNo">399</span>   * @param c the environment provided by the region server<a name="line.399"></a>
+<span class="sourceLineNo">400</span>   * @param delete The Delete object<a name="line.400"></a>
+<span class="sourceLineNo">401</span>   * @param edit The WALEdit object for the wal<a name="line.401"></a>
+<span class="sourceLineNo">402</span>   * @param durability Persistence guarantee for this Delete<a name="line.402"></a>
+<span class="sourceLineNo">403</span>   */<a name="line.403"></a>
+<span class="sourceLineNo">404</span>  default void preDelete(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Delete delete,<a name="line.404"></a>
+<span class="sourceLineNo">405</span>      WALEdit edit, Durability durability) throws IOException {}<a name="line.405"></a>
+<span class="sourceLineNo">406</span><a name="line.406"></a>
+<span class="sourceLineNo">407</span>  /**<a name="line.407"></a>
+<span class="sourceLineNo">408</span>   * Called before the server updates the timestamp for version delete with latest timestamp.<a name="line.408"></a>
+<span class="sourceLineNo">409</span>   * &lt;p&gt;<a name="line.409"></a>
+<span class="sourceLineNo">410</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.410"></a>
 <span class="sourceLineNo">411</span>   * &lt;p&gt;<a name="line.411"></a>
-<span class="sourceLineNo">412</span>   * Call CoprocessorEnvironment#bypass to skip default actions<a name="line.412"></a>
-<span class="sourceLineNo">413</span>   * &lt;p&gt;<a name="line.413"></a>
-<span class="sourceLineNo">414</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained coprocessors<a name="line.414"></a>
-<span class="sourceLineNo">415</span>   * @param c the environment provided by the region server<a name="line.415"></a>
-<span class="sourceLineNo">416</span>   * @param mutation - the parent mutation associated with this delete cell<a name="line.416"></a>
-<span class="sourceLineNo">417</span>   * @param cell - The deleteColumn with latest version cell<a name="line.417"></a>
-<span class="sourceLineNo">418</span>   * @param byteNow - timestamp bytes<a name="line.418"></a>
-<span class="sourceLineNo">419</span>   * @param get - the get formed using the current cell's row. Note that the get does not specify<a name="line.419"></a>
-<span class="sourceLineNo">420</span>   *          the family and qualifier<a name="line.420"></a>
-<span class="sourceLineNo">421</span>   */<a name="line.421"></a>
-<span class="sourceLineNo">422</span>  default void prePrepareTimeStampForDeleteVersion(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.422"></a>
-<span class="sourceLineNo">423</span>      Mutation mutation, Cell cell, byte[] byteNow, Get get) throws IOException {}<a name="line.423"></a>
-<span class="sourceLineNo">424</span><a name="line.424"></a>
-<span class="sourceLineNo">425</span>  /**<a name="line.425"></a>
-<span class="sourceLineNo">426</span>   * Called after the client deletes a value.<a name="line.426"></a>
-<span class="sourceLineNo">427</span>   * &lt;p&gt;<a name="line.427"></a>
-<span class="sourceLineNo">428</span>   * Call CoprocessorEnvironment#complete to skip any subsequent chained<a name="line.428"></a>
-<span class="sourceLineNo">429</span>   * coprocessors<a name="line.429"></a>
-<span class="sourceLineNo">430</span>   * &lt;p&gt;<a name="line.430"></a>
-<span class="sourceLineNo">431</span>   * Note: Do not retain references to any Cells in 'delete' beyond the life of this invocation.<a name="line.431"></a>
-<span class="sourceLineNo">432</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.432"></a>
-<span class="sourceLineNo">433</span>   * @param c the environment provided by the region server<a name="line.433"></a>
-<span class="sourceLineNo">434</span>   * @param delete The Delete object<a name="line.434"></a>
-<span class="sourceLineNo">435</span>   * @param edit The WALEdit object for the wal<a name="line.435"></a>
-<span class="sourceLineNo">436</span>   * @param durability Persistence guarantee for this Delete<a name="line.436"></a>
-<span class="sourceLineNo">437</span>   */<a name="line.437"></a>
-<span class="sourceLineNo">438</span>  default void postDelete(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, Delete delete,<a name="line.438"></a>
-<span class="sourceLineNo">439</span>      WALEdit edit, Durability durability) throws IOException {}<a name="line.439"></a>
-<span class="sourceLineNo">440</span><a name="line.440"></a>
-<span class="sourceLineNo">441</span>  /**<a name="line.441"></a>
-<span class="sourceLineNo">442</span>   * This will be called for every batch mutation operation happening at the server. This will be<a name="line.442"></a>
-<span class="sourceLineNo">443</span>   * called after acquiring the locks on the mutating rows and after applying the proper timestamp<a name="line.443"></a>
-<span class="sourceLineNo">444</span>   * for each Mutation at the server. The batch may contain Put/Delete. By setting OperationStatus<a name="line.444"></a>
-<span class="sourceLineNo">445</span>   * of Mutations ({@link MiniBatchOperationInProgress#setOperationStatus(int, OperationStatus)}),<a name="line.445"></a>
-<span class="sourceLineNo">446</span>   * {@link RegionObserver} can make Region to skip these Mutations.<a name="line.446"></a>
-<span class="sourceLineNo">447</span>   * &lt;p&gt;<a name="line.447"></a>
-<span class="sourceLineNo">448</span>   * Note: Do not retain references to any Cells in Mutations beyond the life of this invocation.<a name="line.448"></a>
-<span class="sourceLineNo">449</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.449"></a>
-<span class="sourceLineNo">450</span>   * @param c the environment provided by the region server<a name="line.450"></a>
-<span class="sourceLineNo">451</span>   * @param miniBatchOp batch of Mutations getting applied to region.<a name="line.451"></a>
-<span class="sourceLineNo">452</span>   */<a name="line.452"></a>
-<span class="sourceLineNo">453</span>  default void preBatchMutate(ObserverContext&lt;RegionCoprocessorEnvironment&gt; c,<a name="line.453"></a>
-<span class="sourceLineNo">454</span>      MiniBatchOperationInProgress&lt;Mutation&gt; miniBatchOp) throws IOException {}<a name="line.454"></a>
-<span class="sourceLineNo">455</span><a name="line.455"></a>
-<span class="sourceLineNo">456</span>  /**<a name="line.456"></a>
-<span class="sourceLineNo">457</span>   * This will be called after applying a batch of Mutations on a region. The Mutations are added to<a name="line.457"></a>
-<span class="sourceLineNo">458</span>   * memstore and WAL. The difference of this one with<a name="line.458"></a>
-<span class="sourceLineNo">459</span>   * {@link #postPut(ObserverContext, Put, WALEdit, Durability) }<a name="line.459"></a>
-<span class="sourceLineNo">460</span>   * and {@link #postDelete(ObserverContext, Delete, WALEdit, Durability) } is<a name="line.460"></a>
-<span class="sourceLineNo">461</span>   * this hook will be executed before the mvcc transaction completion.<a name="line.461"></a>
-<span class="sourceLineNo">462</span>   * &lt;p&gt;<a name="line.462"></a>
-<span class="sourceLineNo">463</span>   * Note: Do not retain references to any Cells in Mutations beyond the life of this invocation.<a name="line.463"></a>
-<span class="sourceLineNo">464</span>   * If need a Cell reference for later use, copy the cell and use that.<a name="line.464"></a>
-<span class="sourceLineNo">465</span>   * @param c the environment provided by the region server<a name="line.465"></a>
-<span class="sourceLineNo">466</span>   * @param miniBatchOp batch o

<TRUNCATED>

Mime
View raw message