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From git-site-r...@apache.org
Subject [11/34] hbase-site git commit: Published site at .
Date Tue, 03 Oct 2017 15:13:54 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/73598816/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
index c05c5f1..0e29348 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html
@@ -172,648 +172,649 @@
 <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>    if(bestSplitRow == null || bestSplitRow.length == 0) {<a name="line.166"></a>
-<span class="sourceLineNo">167</span>      throw new DoNotRetryIOException("Region not splittable because bestSplitPoint = null");<a name="line.167"></a>
-<span class="sourceLineNo">168</span>    }<a name="line.168"></a>
-<span class="sourceLineNo">169</span><a name="line.169"></a>
-<span class="sourceLineNo">170</span>    if (Bytes.equals(regionToSplit.getStartKey(), bestSplitRow)) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span>      throw new DoNotRetryIOException(<a name="line.171"></a>
-<span class="sourceLineNo">172</span>        "Split row is equal to startkey: " + Bytes.toStringBinary(splitRow));<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>    if (!regionToSplit.containsRow(bestSplitRow)) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span>      throw new DoNotRetryIOException(<a name="line.176"></a>
-<span class="sourceLineNo">177</span>        "Split row is not inside region key range splitKey:" + Bytes.toStringBinary(splitRow) +<a name="line.177"></a>
-<span class="sourceLineNo">178</span>        " region: " + regionToSplit);<a name="line.178"></a>
-<span class="sourceLineNo">179</span>    }<a name="line.179"></a>
-<span class="sourceLineNo">180</span>  }<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>   * Calculate daughter regionid to use.<a name="line.183"></a>
-<span class="sourceLineNo">184</span>   * @param hri Parent {@link RegionInfo}<a name="line.184"></a>
-<span class="sourceLineNo">185</span>   * @return Daughter region id (timestamp) to use.<a name="line.185"></a>
-<span class="sourceLineNo">186</span>   */<a name="line.186"></a>
-<span class="sourceLineNo">187</span>  private static long getDaughterRegionIdTimestamp(final RegionInfo hri) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span>    long rid = EnvironmentEdgeManager.currentTime();<a name="line.188"></a>
-<span class="sourceLineNo">189</span>    // Regionid is timestamp.  Can't be less than that of parent else will insert<a name="line.189"></a>
-<span class="sourceLineNo">190</span>    // at wrong location in hbase:meta (See HBASE-710).<a name="line.190"></a>
-<span class="sourceLineNo">191</span>    if (rid &lt; hri.getRegionId()) {<a name="line.191"></a>
-<span class="sourceLineNo">192</span>      LOG.warn("Clock skew; parent regions id is " + hri.getRegionId() +<a name="line.192"></a>
-<span class="sourceLineNo">193</span>        " but current time here is " + rid);<a name="line.193"></a>
-<span class="sourceLineNo">194</span>      rid = hri.getRegionId() + 1;<a name="line.194"></a>
-<span class="sourceLineNo">195</span>    }<a name="line.195"></a>
-<span class="sourceLineNo">196</span>    return rid;<a name="line.196"></a>
-<span class="sourceLineNo">197</span>  }<a name="line.197"></a>
-<span class="sourceLineNo">198</span><a name="line.198"></a>
-<span class="sourceLineNo">199</span>  @Override<a name="line.199"></a>
-<span class="sourceLineNo">200</span>  protected Flow executeFromState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.200"></a>
-<span class="sourceLineNo">201</span>      throws InterruptedException {<a name="line.201"></a>
-<span class="sourceLineNo">202</span>    if (isTraceEnabled()) {<a name="line.202"></a>
-<span class="sourceLineNo">203</span>      LOG.trace(this + " execute state=" + state);<a name="line.203"></a>
-<span class="sourceLineNo">204</span>    }<a name="line.204"></a>
-<span class="sourceLineNo">205</span><a name="line.205"></a>
-<span class="sourceLineNo">206</span>    try {<a name="line.206"></a>
-<span class="sourceLineNo">207</span>      switch (state) {<a name="line.207"></a>
-<span class="sourceLineNo">208</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.208"></a>
-<span class="sourceLineNo">209</span>        if (prepareSplitRegion(env)) {<a name="line.209"></a>
-<span class="sourceLineNo">210</span>          setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.210"></a>
-<span class="sourceLineNo">211</span>          break;<a name="line.211"></a>
-<span class="sourceLineNo">212</span>        } else {<a name="line.212"></a>
-<span class="sourceLineNo">213</span>          assert isFailed() : "split region should have an exception here";<a name="line.213"></a>
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-<span class="sourceLineNo">218</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.218"></a>
-<span class="sourceLineNo">219</span>        break;<a name="line.219"></a>
-<span class="sourceLineNo">220</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.220"></a>
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-<span class="sourceLineNo">223</span>        break;<a name="line.223"></a>
-<span class="sourceLineNo">224</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.224"></a>
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-<span class="sourceLineNo">226</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR);<a name="line.226"></a>
-<span class="sourceLineNo">227</span>        break;<a name="line.227"></a>
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-<span class="sourceLineNo">231</span>        break;<a name="line.231"></a>
-<span class="sourceLineNo">232</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.232"></a>
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-<span class="sourceLineNo">235</span>        break;<a name="line.235"></a>
-<span class="sourceLineNo">236</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.236"></a>
-<span class="sourceLineNo">237</span>        preSplitRegionAfterPONR(env);<a name="line.237"></a>
-<span class="sourceLineNo">238</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.238"></a>
-<span class="sourceLineNo">239</span>        break;<a name="line.239"></a>
-<span class="sourceLineNo">240</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.240"></a>
-<span class="sourceLineNo">241</span>        addChildProcedure(createAssignProcedures(env, getRegionReplication(env)));<a name="line.241"></a>
-<span class="sourceLineNo">242</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.242"></a>
-<span class="sourceLineNo">243</span>        break;<a name="line.243"></a>
-<span class="sourceLineNo">244</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.244"></a>
-<span class="sourceLineNo">245</span>        postSplitRegion(env);<a name="line.245"></a>
-<span class="sourceLineNo">246</span>        return Flow.NO_MORE_STATE;<a name="line.246"></a>
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-<span class="sourceLineNo">248</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.248"></a>
-<span class="sourceLineNo">249</span>      }<a name="line.249"></a>
-<span class="sourceLineNo">250</span>    } catch (IOException e) {<a name="line.250"></a>
-<span class="sourceLineNo">251</span>      String msg = "Error trying to split region " + getParentRegion().getEncodedName() + " in the table "<a name="line.251"></a>
-<span class="sourceLineNo">252</span>          + getTableName() + " (in state=" + state + ")";<a name="line.252"></a>
-<span class="sourceLineNo">253</span>      if (!isRollbackSupported(state)) {<a name="line.253"></a>
-<span class="sourceLineNo">254</span>        // We reach a state that cannot be rolled back. We just need to keep retry.<a name="line.254"></a>
-<span class="sourceLineNo">255</span>        LOG.warn(msg, e);<a name="line.255"></a>
-<span class="sourceLineNo">256</span>      } else {<a name="line.256"></a>
-<span class="sourceLineNo">257</span>        LOG.error(msg, e);<a name="line.257"></a>
-<span class="sourceLineNo">258</span>        setFailure(e);<a name="line.258"></a>
-<span class="sourceLineNo">259</span>      }<a name="line.259"></a>
-<span class="sourceLineNo">260</span>    }<a name="line.260"></a>
-<span class="sourceLineNo">261</span>    // if split fails,  need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.261"></a>
-<span class="sourceLineNo">262</span>    return Flow.HAS_MORE_STATE;<a name="line.262"></a>
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-<span class="sourceLineNo">264</span><a name="line.264"></a>
-<span class="sourceLineNo">265</span>  @Override<a name="line.265"></a>
-<span class="sourceLineNo">266</span>  protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.266"></a>
-<span class="sourceLineNo">267</span>      throws IOException, InterruptedException {<a name="line.267"></a>
-<span class="sourceLineNo">268</span>    if (isTraceEnabled()) {<a name="line.268"></a>
-<span class="sourceLineNo">269</span>      LOG.trace(this + " rollback state=" + state);<a name="line.269"></a>
-<span class="sourceLineNo">270</span>    }<a name="line.270"></a>
-<span class="sourceLineNo">271</span><a name="line.271"></a>
-<span class="sourceLineNo">272</span>    try {<a name="line.272"></a>
-<span class="sourceLineNo">273</span>      switch (state) {<a name="line.273"></a>
-<span class="sourceLineNo">274</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.274"></a>
-<span class="sourceLineNo">275</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.275"></a>
-<span class="sourceLineNo">276</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR:<a name="line.276"></a>
-<span class="sourceLineNo">277</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.277"></a>
-<span class="sourceLineNo">278</span>        // PONR<a name="line.278"></a>
-<span class="sourceLineNo">279</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.279"></a>
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-<span class="sourceLineNo">282</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.282"></a>
-<span class="sourceLineNo">283</span>        // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.283"></a>
-<span class="sourceLineNo">284</span>        break;<a name="line.284"></a>
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-<span class="sourceLineNo">286</span>        openParentRegion(env);<a name="line.286"></a>
-<span class="sourceLineNo">287</span>        break;<a name="line.287"></a>
-<span class="sourceLineNo">288</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.288"></a>
-<span class="sourceLineNo">289</span>        postRollBackSplitRegion(env);<a name="line.289"></a>
-<span class="sourceLineNo">290</span>        break;<a name="line.290"></a>
-<span class="sourceLineNo">291</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.291"></a>
-<span class="sourceLineNo">292</span>        break; // nothing to do<a name="line.292"></a>
-<span class="sourceLineNo">293</span>      default:<a name="line.293"></a>
-<span class="sourceLineNo">294</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.294"></a>
-<span class="sourceLineNo">295</span>      }<a name="line.295"></a>
-<span class="sourceLineNo">296</span>    } catch (IOException e) {<a name="line.296"></a>
-<span class="sourceLineNo">297</span>      // This will be retried. Unless there is a bug in the code,<a name="line.297"></a>
-<span class="sourceLineNo">298</span>      // this should be just a "temporary error" (e.g. network down)<a name="line.298"></a>
-<span class="sourceLineNo">299</span>      LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.299"></a>
-<span class="sourceLineNo">300</span>          " for splitting the region "<a name="line.300"></a>
-<span class="sourceLineNo">301</span>        + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.301"></a>
-<span class="sourceLineNo">302</span>      throw e;<a name="line.302"></a>
-<span class="sourceLineNo">303</span>    }<a name="line.303"></a>
-<span class="sourceLineNo">304</span>  }<a name="line.304"></a>
-<span class="sourceLineNo">305</span><a name="line.305"></a>
-<span class="sourceLineNo">306</span>  /*<a name="line.306"></a>
-<span class="sourceLineNo">307</span>   * Check whether we are in the state that can be rollback<a name="line.307"></a>
-<span class="sourceLineNo">308</span>   */<a name="line.308"></a>
-<span class="sourceLineNo">309</span>  @Override<a name="line.309"></a>
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-<span class="sourceLineNo">311</span>    switch (state) {<a name="line.311"></a>
-<span class="sourceLineNo">312</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.312"></a>
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-<span class="sourceLineNo">317</span>        return false;<a name="line.317"></a>
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-<span class="sourceLineNo">362</span>    assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.362"></a>
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+<span class="sourceLineNo">202</span>      throws InterruptedException {<a name="line.202"></a>
+<span class="sourceLineNo">203</span>    if (isTraceEnabled()) {<a name="line.203"></a>
+<span class="sourceLineNo">204</span>      LOG.trace(this + " execute state=" + state);<a name="line.204"></a>
+<span class="sourceLineNo">205</span>    }<a name="line.205"></a>
+<span class="sourceLineNo">206</span><a name="line.206"></a>
+<span class="sourceLineNo">207</span>    try {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>      switch (state) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.209"></a>
+<span class="sourceLineNo">210</span>        if (prepareSplitRegion(env)) {<a name="line.210"></a>
+<span class="sourceLineNo">211</span>          setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION);<a name="line.211"></a>
+<span class="sourceLineNo">212</span>          break;<a name="line.212"></a>
+<span class="sourceLineNo">213</span>        } else {<a name="line.213"></a>
+<span class="sourceLineNo">214</span>          assert isFailed() : "split region should have an exception here";<a name="line.214"></a>
+<span class="sourceLineNo">215</span>          return Flow.NO_MORE_STATE;<a name="line.215"></a>
+<span class="sourceLineNo">216</span>        }<a name="line.216"></a>
+<span class="sourceLineNo">217</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.217"></a>
+<span class="sourceLineNo">218</span>        preSplitRegion(env);<a name="line.218"></a>
+<span class="sourceLineNo">219</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CLOSE_PARENT_REGION);<a name="line.219"></a>
+<span class="sourceLineNo">220</span>        break;<a name="line.220"></a>
+<span class="sourceLineNo">221</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.221"></a>
+<span class="sourceLineNo">222</span>        addChildProcedure(createUnassignProcedures(env, getRegionReplication(env)));<a name="line.222"></a>
+<span class="sourceLineNo">223</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS);<a name="line.223"></a>
+<span class="sourceLineNo">224</span>        break;<a name="line.224"></a>
+<span class="sourceLineNo">225</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.225"></a>
+<span class="sourceLineNo">226</span>        createDaughterRegions(env);<a name="line.226"></a>
+<span class="sourceLineNo">227</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META);<a name="line.227"></a>
+<span class="sourceLineNo">228</span>        break;<a name="line.228"></a>
+<span class="sourceLineNo">229</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.229"></a>
+<span class="sourceLineNo">230</span>        preSplitRegionBeforeMETA(env);<a name="line.230"></a>
+<span class="sourceLineNo">231</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_UPDATE_META);<a name="line.231"></a>
+<span class="sourceLineNo">232</span>        break;<a name="line.232"></a>
+<span class="sourceLineNo">233</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.233"></a>
+<span class="sourceLineNo">234</span>        updateMetaForDaughterRegions(env);<a name="line.234"></a>
+<span class="sourceLineNo">235</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META);<a name="line.235"></a>
+<span class="sourceLineNo">236</span>        break;<a name="line.236"></a>
+<span class="sourceLineNo">237</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.237"></a>
+<span class="sourceLineNo">238</span>        preSplitRegionAfterMETA(env);<a name="line.238"></a>
+<span class="sourceLineNo">239</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS);<a name="line.239"></a>
+<span class="sourceLineNo">240</span>        break;<a name="line.240"></a>
+<span class="sourceLineNo">241</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.241"></a>
+<span class="sourceLineNo">242</span>        addChildProcedure(createAssignProcedures(env, getRegionReplication(env)));<a name="line.242"></a>
+<span class="sourceLineNo">243</span>        setNextState(SplitTableRegionState.SPLIT_TABLE_REGION_POST_OPERATION);<a name="line.243"></a>
+<span class="sourceLineNo">244</span>        break;<a name="line.244"></a>
+<span class="sourceLineNo">245</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.245"></a>
+<span class="sourceLineNo">246</span>        postSplitRegion(env);<a name="line.246"></a>
+<span class="sourceLineNo">247</span>        return Flow.NO_MORE_STATE;<a name="line.247"></a>
+<span class="sourceLineNo">248</span>      default:<a name="line.248"></a>
+<span class="sourceLineNo">249</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.249"></a>
+<span class="sourceLineNo">250</span>      }<a name="line.250"></a>
+<span class="sourceLineNo">251</span>    } catch (IOException e) {<a name="line.251"></a>
+<span class="sourceLineNo">252</span>      String msg = "Error trying to split region " + getParentRegion().getEncodedName() + " in the table "<a name="line.252"></a>
+<span class="sourceLineNo">253</span>          + getTableName() + " (in state=" + state + ")";<a name="line.253"></a>
+<span class="sourceLineNo">254</span>      if (!isRollbackSupported(state)) {<a name="line.254"></a>
+<span class="sourceLineNo">255</span>        // We reach a state that cannot be rolled back. We just need to keep retry.<a name="line.255"></a>
+<span class="sourceLineNo">256</span>        LOG.warn(msg, e);<a name="line.256"></a>
+<span class="sourceLineNo">257</span>      } else {<a name="line.257"></a>
+<span class="sourceLineNo">258</span>        LOG.error(msg, e);<a name="line.258"></a>
+<span class="sourceLineNo">259</span>        setFailure(e);<a name="line.259"></a>
+<span class="sourceLineNo">260</span>      }<a name="line.260"></a>
+<span class="sourceLineNo">261</span>    }<a name="line.261"></a>
+<span class="sourceLineNo">262</span>    // if split fails,  need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.262"></a>
+<span class="sourceLineNo">263</span>    return Flow.HAS_MORE_STATE;<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>  @Override<a name="line.266"></a>
+<span class="sourceLineNo">267</span>  protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.267"></a>
+<span class="sourceLineNo">268</span>      throws IOException, InterruptedException {<a name="line.268"></a>
+<span class="sourceLineNo">269</span>    if (isTraceEnabled()) {<a name="line.269"></a>
+<span class="sourceLineNo">270</span>      LOG.trace(this + " rollback state=" + state);<a name="line.270"></a>
+<span class="sourceLineNo">271</span>    }<a name="line.271"></a>
+<span class="sourceLineNo">272</span><a name="line.272"></a>
+<span class="sourceLineNo">273</span>    try {<a name="line.273"></a>
+<span class="sourceLineNo">274</span>      switch (state) {<a name="line.274"></a>
+<span class="sourceLineNo">275</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.275"></a>
+<span class="sourceLineNo">276</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.276"></a>
+<span class="sourceLineNo">277</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.277"></a>
+<span class="sourceLineNo">278</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.278"></a>
+<span class="sourceLineNo">279</span>        // PONR<a name="line.279"></a>
+<span class="sourceLineNo">280</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.280"></a>
+<span class="sourceLineNo">281</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.281"></a>
+<span class="sourceLineNo">282</span>        break;<a name="line.282"></a>
+<span class="sourceLineNo">283</span>      case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.283"></a>
+<span class="sourceLineNo">284</span>        // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.284"></a>
+<span class="sourceLineNo">285</span>        break;<a name="line.285"></a>
+<span class="sourceLineNo">286</span>      case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.286"></a>
+<span class="sourceLineNo">287</span>        openParentRegion(env);<a name="line.287"></a>
+<span class="sourceLineNo">288</span>        break;<a name="line.288"></a>
+<span class="sourceLineNo">289</span>      case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.289"></a>
+<span class="sourceLineNo">290</span>        postRollBackSplitRegion(env);<a name="line.290"></a>
+<span class="sourceLineNo">291</span>        break;<a name="line.291"></a>
+<span class="sourceLineNo">292</span>      case SPLIT_TABLE_REGION_PREPARE:<a name="line.292"></a>
+<span class="sourceLineNo">293</span>        break; // nothing to do<a name="line.293"></a>
+<span class="sourceLineNo">294</span>      default:<a name="line.294"></a>
+<span class="sourceLineNo">295</span>        throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.295"></a>
+<span class="sourceLineNo">296</span>      }<a name="line.296"></a>
+<span class="sourceLineNo">297</span>    } catch (IOException e) {<a name="line.297"></a>
+<span class="sourceLineNo">298</span>      // This will be retried. Unless there is a bug in the code,<a name="line.298"></a>
+<span class="sourceLineNo">299</span>      // this should be just a "temporary error" (e.g. network down)<a name="line.299"></a>
+<span class="sourceLineNo">300</span>      LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.300"></a>
+<span class="sourceLineNo">301</span>          " for splitting the region "<a name="line.301"></a>
+<span class="sourceLineNo">302</span>        + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.302"></a>
+<span class="sourceLineNo">303</span>      throw e;<a name="line.303"></a>
+<span class="sourceLineNo">304</span>    }<a name="line.304"></a>
+<span class="sourceLineNo">305</span>  }<a name="line.305"></a>
+<span class="sourceLineNo">306</span><a name="line.306"></a>
+<span class="sourceLineNo">307</span>  /*<a name="line.307"></a>
+<span class="sourceLineNo">308</span>   * Check whether we are in the state that can be rollback<a name="line.308"></a>
+<span class="sourceLineNo">309</span>   */<a name="line.309"></a>
+<span class="sourceLineNo">310</span>  @Override<a name="line.310"></a>
+<span class="sourceLineNo">311</span>  protected boolean isRollbackSupported(final SplitTableRegionState state) {<a name="line.311"></a>
+<span class="sourceLineNo">312</span>    switch (state) {<a name="line.312"></a>
+<span class="sourceLineNo">313</span>      case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.313"></a>
+<span class="sourceLineNo">314</span>      case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.314"></a>
+<span class="sourceLineNo">315</span>      case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.315"></a>
+<span class="sourceLineNo">316</span>      case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.316"></a>
+<span class="sourceLineNo">317</span>        // It is not safe to rollback if we reach to these states.<a name="line.317"></a>
+<span class="sourceLineNo">318</span>        return false;<a name="line.318"></a>
+<span class="sourceLineNo">319</span>      default:<a name="line.319"></a>
+<span class="sourceLineNo">320</span>        break;<a name="line.320"></a>
+<span class="sourceLineNo">321</span>    }<a name="line.321"></a>
+<span class="sourceLineNo">322</span>    return true;<a name="line.322"></a>
+<span class="sourceLineNo">323</span>  }<a name="line.323"></a>
+<span class="sourceLineNo">324</span><a name="line.324"></a>
+<span class="sourceLineNo">325</span>  @Override<a name="line.325"></a>
+<span class="sourceLineNo">326</span>  protected SplitTableRegionState getState(final int stateId) {<a name="line.326"></a>
+<span class="sourceLineNo">327</span>    return SplitTableRegionState.forNumber(stateId);<a name="line.327"></a>
+<span class="sourceLineNo">328</span>  }<a name="line.328"></a>
+<span class="sourceLineNo">329</span><a name="line.329"></a>
+<span class="sourceLineNo">330</span>  @Override<a name="line.330"></a>
+<span class="sourceLineNo">331</span>  protected int getStateId(final SplitTableRegionState state) {<a name="line.331"></a>
+<span class="sourceLineNo">332</span>    return state.getNumber();<a name="line.332"></a>
+<span class="sourceLineNo">333</span>  }<a name="line.333"></a>
+<span class="sourceLineNo">334</span><a name="line.334"></a>
+<span class="sourceLineNo">335</span>  @Override<a name="line.335"></a>
+<span class="sourceLineNo">336</span>  protected SplitTableRegionState getInitialState() {<a name="line.336"></a>
+<span class="sourceLineNo">337</span>    return SplitTableRegionState.SPLIT_TABLE_REGION_PREPARE;<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>  @Override<a name="line.340"></a>
+<span class="sourceLineNo">341</span>  protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.341"></a>
+<span class="sourceLineNo">342</span>      throws IOException {<a name="line.342"></a>
+<span class="sourceLineNo">343</span>    super.serializeStateData(serializer);<a name="line.343"></a>
+<span class="sourceLineNo">344</span><a name="line.344"></a>
+<span class="sourceLineNo">345</span>    final MasterProcedureProtos.SplitTableRegionStateData.Builder splitTableRegionMsg =<a name="line.345"></a>
+<span class="sourceLineNo">346</span>        MasterProcedureProtos.SplitTableRegionStateData.newBuilder()<a name="line.346"></a>
+<span class="sourceLineNo">347</span>        .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.347"></a>
+<span class="sourceLineNo">348</span>        .setParentRegionInfo(ProtobufUtil.toRegionInfo(getRegion()))<a name="line.348"></a>
+<span class="sourceLineNo">349</span>        .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_1_RI))<a name="line.349"></a>
+<span class="sourceLineNo">350</span>        .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_2_RI));<a name="line.350"></a>
+<span class="sourceLineNo">351</span>    serializer.serialize(splitTableRegionMsg.build());<a name="line.351"></a>
+<span class="sourceLineNo">352</span>  }<a name="line.352"></a>
+<span class="sourceLineNo">353</span><a name="line.353"></a>
+<span class="sourceLineNo">354</span>  @Override<a name="line.354"></a>
+<span class="sourceLineNo">355</span>  protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.355"></a>
+<span class="sourceLineNo">356</span>      throws IOException {<a name="line.356"></a>
+<span class="sourceLineNo">357</span>    super.deserializeStateData(serializer);<a name="line.357"></a>
+<span class="sourceLineNo">358</span><a name="line.358"></a>
+<span class="sourceLineNo">359</span>    final MasterProcedureProtos.SplitTableRegionStateData splitTableRegionsMsg =<a name="line.359"></a>
+<span class="sourceLineNo">360</span>        serializer.deserialize(MasterProcedureProtos.SplitTableRegionStateData.class);<a name="line.360"></a>
+<span class="sourceLineNo">361</span>    setUser(MasterProcedureUtil.toUserInfo(splitTableRegionsMsg.getUserInfo()));<a name="line.361"></a>
+<span class="sourceLineNo">362</span>    setRegion(ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getParentRegionInfo()));<a name="line.362"></a>
+<span class="sourceLineNo">363</span>    assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.363"></a>
+<span class="sourceLineNo">364</span>    daughter_1_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(0));<a name="line.364"></a>
+<span class="sourceLineNo">365</span>    daughter_2_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(1));<a name="line.365"></a>
+<span class="sourceLineNo">366</span>  }<a name="line.366"></a>
+<span class="sourceLineNo">367</span><a name="line.367"></a>
+<span class="sourceLineNo">368</span>  @Override<a name="line.368"></a>
+<span class="sourceLineNo">369</span>  public void toStringClassDetails(StringBuilder sb) {<a name="line.369"></a>
+<span class="sourceLineNo">370</span>    sb.append(getClass().getSimpleName());<a name="line.370"></a>
+<span class="sourceLineNo">371</span>    sb.append(" table=");<a name="line.371"></a>
+<span class="sourceLineNo">372</span>    sb.append(getTableName());<a name="line.372"></a>
+<span class="sourceLineNo">373</span>    sb.append(", parent=");<a name="line.373"></a>
+<span class="sourceLineNo">374</span>    sb.append(getParentRegion().getShortNameToLog());<a name="line.374"></a>
+<span class="sourceLineNo">375</span>    sb.append(", daughterA=");<a name="line.375"></a>
+<span class="sourceLineNo">376</span>    sb.append(daughter_1_RI.getShortNameToLog());<a name="line.376"></a>
+<span class="sourceLineNo">377</span>    sb.append(", daughterB=");<a name="line.377"></a>
+<span class="sourceLineNo">378</span>    sb.append(daughter_2_RI.getShortNameToLog());<a name="line.378"></a>
+<span class="sourceLineNo">379</span>  }<a name="line.379"></a>
+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span>  private RegionInfo getParentRegion() {<a name="line.381"></a>
+<span class="sourceLineNo">382</span>    return getRegion();<a name="line.382"></a>
+<span class="sourceLineNo">383</span>  }<a name="line.383"></a>
+<span class="sourceLineNo">384</span><a name="line.384"></a>
+<span class="sourceLineNo">385</span>  @Override<a name="line.385"></a>
+<span class="sourceLineNo">386</span>  public TableOperationType getTableOperationType() {<a name="line.386"></a>
+<span class="sourceLineNo">387</span>    return TableOperationType.REGION_SPLIT;<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>  @Override<a name="line.390"></a>
+<span class="sourceLineNo">391</span>  protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.391"></a>
+<span class="sourceLineNo">392</span>    return env.getAssignmentManager().getAssignmentManagerMetrics().getSplitProcMetrics();<a name="line.392"></a>
+<span class="sourceLineNo">393</span>  }<a name="line.393"></a>
+<span class="sourceLineNo">394</span><a name="line.394"></a>
+<span class="sourceLineNo">395</span>  private byte[] getSplitRow() {<a name="line.395"></a>
+<span class="sourceLineNo">396</span>    return daughter_2_RI.getStartKey();<a name="line.396"></a>
+<span class="sourceLineNo">397</span>  }<a name="line.397"></a>
+<span class="sourceLineNo">398</span><a name="line.398"></a>
+<span class="sourceLineNo">399</span>  private static State [] EXPECTED_SPLIT_STATES = new State [] {State.OPEN, State.CLOSED};<a name="line.399"></a>
+<span class="sourceLineNo">400</span>  /**<a name="line.400"></a>
+<span class="sourceLineNo">401</span>   * Prepare to Split region.<a name="line.401"></a>
+<span class="sourceLineNo">402</span>   * @param env MasterProcedureEnv<a name="line.402"></a>
+<span class="sourceLineNo">403</span>   * @throws IOException<a name="line.403"></a>
+<span class="sourceLineNo">404</span>   */<a name="line.404"></a>
+<span class="sourceLineNo">405</span>  @VisibleForTesting<a name="line.405"></a>
+<span class="sourceLineNo">406</span>  public boolean prepareSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.406"></a>
+<span class="sourceL

<TRUNCATED>

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