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See the NOTICE file<a name="line.3"></a> -<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> -<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> -<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> -<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> -<span class="sourceLineNo">008</span> * with the License. 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b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileConverter.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileStatusConverter.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileStatusConverter.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileStatusConverter.html index dd6b12f..f47d627 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileStatusConverter.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileStatusConverter.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileablePath.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileablePath.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileablePath.html index dd6b12f..f47d627 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileablePath.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileablePath.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileableStoreFile.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileableStoreFile.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileableStoreFile.html index dd6b12f..f47d627 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileableStoreFile.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.FileableStoreFile.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.StoreToFile.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.StoreToFile.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.StoreToFile.html index dd6b12f..f47d627 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.StoreToFile.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.StoreToFile.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.html index dd6b12f..f47d627 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/HFileArchiver.html @@ -263,7 +263,7 @@ <span class="sourceLineNo">255</span> }<a name="line.255"></a> <span class="sourceLineNo">256</span><a name="line.256"></a> <span class="sourceLineNo">257</span> // otherwise we attempt to archive the store files<a name="line.257"></a> -<span class="sourceLineNo">258</span> if (LOG.isDebugEnabled()) LOG.debug("Archiving compacted store files.");<a name="line.258"></a> +<span class="sourceLineNo">258</span> LOG.debug("Archiving compacted store files.");<a name="line.258"></a> <span class="sourceLineNo">259</span><a name="line.259"></a> <span class="sourceLineNo">260</span> // Wrap the storefile into a File<a name="line.260"></a> <span class="sourceLineNo">261</span> StoreToFile getStorePath = new StoreToFile(fs);<a name="line.261"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html index 0cc71bf..59dbee4 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html @@ -1204,7 +1204,7 @@ <span class="sourceLineNo">1196</span> private void handleRegionOverStuckWarningThreshold(final RegionInfo regionInfo) {<a name="line.1196"></a> <span class="sourceLineNo">1197</span> final RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.1197"></a> <span class="sourceLineNo">1198</span> //if (regionNode.isStuck()) {<a name="line.1198"></a> -<span class="sourceLineNo">1199</span> LOG.warn("TODO Handle stuck in transition: " + regionNode);<a name="line.1199"></a> +<span class="sourceLineNo">1199</span> LOG.warn("STUCK Region-In-Transition {}", regionNode);<a name="line.1199"></a> <span class="sourceLineNo">1200</span> }<a name="line.1200"></a> <span class="sourceLineNo">1201</span><a name="line.1201"></a> <span class="sourceLineNo">1202</span> // ============================================================================================<a name="line.1202"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html index 0cc71bf..59dbee4 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html @@ -1204,7 +1204,7 @@ <span class="sourceLineNo">1196</span> private void handleRegionOverStuckWarningThreshold(final RegionInfo regionInfo) {<a name="line.1196"></a> <span class="sourceLineNo">1197</span> final RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.1197"></a> <span class="sourceLineNo">1198</span> //if (regionNode.isStuck()) {<a name="line.1198"></a> -<span class="sourceLineNo">1199</span> LOG.warn("TODO Handle stuck in transition: " + regionNode);<a name="line.1199"></a> +<span class="sourceLineNo">1199</span> LOG.warn("STUCK Region-In-Transition {}", regionNode);<a name="line.1199"></a> <span class="sourceLineNo">1200</span> }<a name="line.1200"></a> <span class="sourceLineNo">1201</span><a name="line.1201"></a> <span class="sourceLineNo">1202</span> // ============================================================================================<a name="line.1202"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html index 0cc71bf..59dbee4 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html @@ -1204,7 +1204,7 @@ <span class="sourceLineNo">1196</span> private void handleRegionOverStuckWarningThreshold(final RegionInfo regionInfo) {<a name="line.1196"></a> <span class="sourceLineNo">1197</span> final RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.1197"></a> <span class="sourceLineNo">1198</span> //if (regionNode.isStuck()) {<a name="line.1198"></a> -<span class="sourceLineNo">1199</span> LOG.warn("TODO Handle stuck in transition: " + regionNode);<a name="line.1199"></a> +<span class="sourceLineNo">1199</span> LOG.warn("STUCK Region-In-Transition {}", regionNode);<a name="line.1199"></a> <span class="sourceLineNo">1200</span> }<a name="line.1200"></a> <span class="sourceLineNo">1201</span><a name="line.1201"></a> <span class="sourceLineNo">1202</span> // ============================================================================================<a name="line.1202"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.html index 92aff94..824f8c3 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.html @@ -257,10 +257,10 @@ <span class="sourceLineNo">249</span> final IOException exception) {<a name="line.249"></a> <span class="sourceLineNo">250</span> // TODO: Is there on-going rpc to cleanup?<a name="line.250"></a> <span class="sourceLineNo">251</span> if (exception instanceof ServerCrashException) {<a name="line.251"></a> -<span class="sourceLineNo">252</span> // This exception comes from ServerCrashProcedure after log splitting.<a name="line.252"></a> +<span class="sourceLineNo">252</span> // This exception comes from ServerCrashProcedure AFTER log splitting.<a name="line.252"></a> <span class="sourceLineNo">253</span> // SCP found this region as a RIT. Its call into here says it is ok to let this procedure go<a name="line.253"></a> -<span class="sourceLineNo">254</span> // on to a complete close now. This will release lock on this region so subsequent action on<a name="line.254"></a> -<span class="sourceLineNo">255</span> // region can succeed; e.g. the assign that follows this unassign when a move (w/o wait on SCP<a name="line.255"></a> +<span class="sourceLineNo">254</span> // complete. This complete will release lock on this region so subsequent action on region<a name="line.254"></a> +<span class="sourceLineNo">255</span> // can succeed; e.g. the assign that follows this unassign when a move (w/o wait on SCP<a name="line.255"></a> <span class="sourceLineNo">256</span> // the assign could run w/o logs being split so data loss).<a name="line.256"></a> <span class="sourceLineNo">257</span> try {<a name="line.257"></a> <span class="sourceLineNo">258</span> reportTransition(env, regionNode, TransitionCode.CLOSED, HConstants.NO_SEQNUM);<a name="line.258"></a> @@ -271,43 +271,44 @@ <span class="sourceLineNo">263</span> } else if (exception instanceof RegionServerAbortedException ||<a name="line.263"></a> <span class="sourceLineNo">264</span> exception instanceof RegionServerStoppedException ||<a name="line.264"></a> <span class="sourceLineNo">265</span> exception instanceof ServerNotRunningYetException) {<a name="line.265"></a> -<span class="sourceLineNo">266</span> // TODO<a name="line.266"></a> -<span class="sourceLineNo">267</span> // RS is aborting, we cannot offline the region since the region may need to do WAL<a name="line.267"></a> -<span class="sourceLineNo">268</span> // recovery. Until we see the RS expiration, we should retry.<a name="line.268"></a> -<span class="sourceLineNo">269</span> // TODO: This should be suspend like the below where we call expire on server?<a name="line.269"></a> -<span class="sourceLineNo">270</span> LOG.info("Ignoring; waiting on ServerCrashProcedure", exception);<a name="line.270"></a> -<span class="sourceLineNo">271</span> } else if (exception instanceof NotServingRegionException) {<a name="line.271"></a> -<span class="sourceLineNo">272</span> LOG.info("IS THIS OK? ANY LOGS TO REPLAY; ACTING AS THOUGH ALL GOOD " + regionNode,<a name="line.272"></a> -<span class="sourceLineNo">273</span> exception);<a name="line.273"></a> -<span class="sourceLineNo">274</span> setTransitionState(RegionTransitionState.REGION_TRANSITION_FINISH);<a name="line.274"></a> -<span class="sourceLineNo">275</span> } else {<a name="line.275"></a> -<span class="sourceLineNo">276</span> LOG.warn("Expiring server " + this + "; " + regionNode.toShortString() +<a name="line.276"></a> -<span class="sourceLineNo">277</span> ", exception=" + exception);<a name="line.277"></a> -<span class="sourceLineNo">278</span> env.getMasterServices().getServerManager().expireServer(regionNode.getRegionLocation());<a name="line.278"></a> -<span class="sourceLineNo">279</span> // Return false so this procedure stays in suspended state. It will be woken up by a<a name="line.279"></a> -<span class="sourceLineNo">280</span> // ServerCrashProcedure when it notices this RIT.<a name="line.280"></a> -<span class="sourceLineNo">281</span> // TODO: Add a SCP as a new subprocedure that we now come to depend on.<a name="line.281"></a> -<span class="sourceLineNo">282</span> return false;<a name="line.282"></a> -<span class="sourceLineNo">283</span> }<a name="line.283"></a> -<span class="sourceLineNo">284</span> return true;<a name="line.284"></a> -<span class="sourceLineNo">285</span> }<a name="line.285"></a> -<span class="sourceLineNo">286</span><a name="line.286"></a> -<span class="sourceLineNo">287</span> @Override<a name="line.287"></a> -<span class="sourceLineNo">288</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.288"></a> -<span class="sourceLineNo">289</span> super.toStringClassDetails(sb);<a name="line.289"></a> -<span class="sourceLineNo">290</span> sb.append(", server=").append(this.hostingServer);<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> @Override<a name="line.293"></a> -<span class="sourceLineNo">294</span> public ServerName getServer(final MasterProcedureEnv env) {<a name="line.294"></a> -<span class="sourceLineNo">295</span> return this.hostingServer;<a name="line.295"></a> -<span class="sourceLineNo">296</span> }<a name="line.296"></a> -<span class="sourceLineNo">297</span><a name="line.297"></a> -<span class="sourceLineNo">298</span> @Override<a name="line.298"></a> -<span class="sourceLineNo">299</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.299"></a> -<span class="sourceLineNo">300</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getUnassignProcMetrics();<a name="line.300"></a> -<span class="sourceLineNo">301</span> }<a name="line.301"></a> -<span class="sourceLineNo">302</span>}<a name="line.302"></a> +<span class="sourceLineNo">266</span> // RS is aborting, we cannot offline the region since the region may need to do WAL<a name="line.266"></a> +<span class="sourceLineNo">267</span> // recovery. 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ANY LOGS TO REPLAY; ACTING AS THOUGH ALL GOOD " + regionNode,<a name="line.271"></a> +<span class="sourceLineNo">272</span> exception);<a name="line.272"></a> +<span class="sourceLineNo">273</span> setTransitionState(RegionTransitionState.REGION_TRANSITION_FINISH);<a name="line.273"></a> +<span class="sourceLineNo">274</span> } else {<a name="line.274"></a> +<span class="sourceLineNo">275</span> LOG.warn("Expiring server " + this + "; " + regionNode.toShortString() +<a name="line.275"></a> +<span class="sourceLineNo">276</span> ", exception=" + exception);<a name="line.276"></a> +<span class="sourceLineNo">277</span> env.getMasterServices().getServerManager().expireServer(regionNode.getRegionLocation());<a name="line.277"></a> +<span class="sourceLineNo">278</span> // Return false so this procedure stays in suspended state. It will be woken up by the<a name="line.278"></a> +<span class="sourceLineNo">279</span> // ServerCrashProcedure that was scheduled when we called #expireServer above. SCP calls<a name="line.279"></a> +<span class="sourceLineNo">280</span> // #handleRIT which will call this method only the exception will be a ServerCrashException<a name="line.280"></a> +<span class="sourceLineNo">281</span> // this time around (See above).<a name="line.281"></a> +<span class="sourceLineNo">282</span> // TODO: Add a SCP as a new subprocedure that we now come to depend on.<a name="line.282"></a> +<span class="sourceLineNo">283</span> return false;<a name="line.283"></a> +<span class="sourceLineNo">284</span> }<a name="line.284"></a> +<span class="sourceLineNo">285</span> return true;<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> @Override<a name="line.288"></a> +<span class="sourceLineNo">289</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.289"></a> +<span class="sourceLineNo">290</span> super.toStringClassDetails(sb);<a name="line.290"></a> +<span class="sourceLineNo">291</span> sb.append(", server=").append(this.hostingServer);<a name="line.291"></a> +<span class="sourceLineNo">292</span> }<a name="line.292"></a> +<span class="sourceLineNo">293</span><a name="line.293"></a> +<span class="sourceLineNo">294</span> @Override<a name="line.294"></a> +<span class="sourceLineNo">295</span> public ServerName getServer(final MasterProcedureEnv env) {<a name="line.295"></a> +<span class="sourceLineNo">296</span> return this.hostingServer;<a name="line.296"></a> +<span class="sourceLineNo">297</span> }<a name="line.297"></a> +<span class="sourceLineNo">298</span><a name="line.298"></a> +<span class="sourceLineNo">299</span> @Override<a name="line.299"></a> +<span class="sourceLineNo">300</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.300"></a> +<span class="sourceLineNo">301</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getUnassignProcMetrics();<a name="line.301"></a> +<span class="sourceLineNo">302</span> }<a name="line.302"></a> +<span class="sourceLineNo">303</span>}<a name="line.303"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8cf03ef1/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/RecoverMetaProcedure.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/RecoverMetaProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/RecoverMetaProcedure.html index a008192..d90ed37 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/RecoverMetaProcedure.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/RecoverMetaProcedure.html @@ -167,130 +167,132 @@ <span class="sourceLineNo">159</span> * just as we do over in ServerCrashProcedure#handleRIT except less to do here; less context<a name="line.159"></a> <span class="sourceLineNo">160</span> * to carry.<a name="line.160"></a> <span class="sourceLineNo">161</span> */<a name="line.161"></a> -<span class="sourceLineNo">162</span> private void handleRIT(MasterProcedureEnv env, RegionInfo ri, ServerName crashedServerName) {<a name="line.162"></a> -<span class="sourceLineNo">163</span> AssignmentManager am = env.getAssignmentManager();<a name="line.163"></a> -<span class="sourceLineNo">164</span> RegionTransitionProcedure rtp = am.getRegionStates().getRegionTransitionProcedure(ri);<a name="line.164"></a> -<span class="sourceLineNo">165</span> if (rtp == null) {<a name="line.165"></a> -<span class="sourceLineNo">166</span> return; // Nothing to do. Not in RIT.<a name="line.166"></a> -<span class="sourceLineNo">167</span> }<a name="line.167"></a> -<span class="sourceLineNo">168</span> // Make sure the RIT is against this crashed server. In the case where there are many<a name="line.168"></a> -<span class="sourceLineNo">169</span> // processings of a crashed server -- backed up for whatever reason (slow WAL split)<a name="line.169"></a> -<span class="sourceLineNo">170</span> // -- then a previous SCP may have already failed an assign, etc., and it may have a<a name="line.170"></a> -<span class="sourceLineNo">171</span> // new location target; DO NOT fail these else we make for assign flux.<a name="line.171"></a> -<span class="sourceLineNo">172</span> ServerName rtpServerName = rtp.getServer(env);<a name="line.172"></a> -<span class="sourceLineNo">173</span> if (rtpServerName == null) {<a name="line.173"></a> -<span class="sourceLineNo">174</span> LOG.warn("RIT with ServerName null! " + rtp);<a name="line.174"></a> -<span class="sourceLineNo">175</span> } else if (rtpServerName.equals(crashedServerName)) {<a name="line.175"></a> -<span class="sourceLineNo">176</span> LOG.info("pid=" + getProcId() + " found RIT " + rtp + "; " +<a name="line.176"></a> -<span class="sourceLineNo">177</span> rtp.getRegionState(env).toShortString());<a name="line.177"></a> -<span class="sourceLineNo">178</span> rtp.remoteCallFailed(env, crashedServerName,<a name="line.178"></a> -<span class="sourceLineNo">179</span> new ServerCrashException(getProcId(), crashedServerName));<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> @Override<a name="line.183"></a> -<span class="sourceLineNo">184</span> protected void rollbackState(MasterProcedureEnv env,<a name="line.184"></a> -<span class="sourceLineNo">185</span> MasterProcedureProtos.RecoverMetaState recoverMetaState)<a name="line.185"></a> -<span class="sourceLineNo">186</span> throws IOException, InterruptedException {<a name="line.186"></a> -<span class="sourceLineNo">187</span> // Can't rollback<a name="line.187"></a> -<span class="sourceLineNo">188</span> throw new UnsupportedOperationException("unhandled state=" + recoverMetaState);<a name="line.188"></a> -<span class="sourceLineNo">189</span> }<a name="line.189"></a> -<span class="sourceLineNo">190</span><a name="line.190"></a> -<span class="sourceLineNo">191</span> @Override<a name="line.191"></a> -<span class="sourceLineNo">192</span> protected MasterProcedureProtos.RecoverMetaState getState(int stateId) {<a name="line.192"></a> -<span class="sourceLineNo">193</span> return RecoverMetaState.forNumber(stateId);<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> @Override<a name="line.196"></a> -<span class="sourceLineNo">197</span> protected int getStateId(MasterProcedureProtos.RecoverMetaState recoverMetaState) {<a name="line.197"></a> -<span class="sourceLineNo">198</span> return recoverMetaState.getNumber();<a name="line.198"></a> -<span class="sourceLineNo">199</span> }<a name="line.199"></a> -<span class="sourceLineNo">200</span><a name="line.200"></a> -<span class="sourceLineNo">201</span> @Override<a name="line.201"></a> -<span class="sourceLineNo">202</span> protected MasterProcedureProtos.RecoverMetaState getInitialState() {<a name="line.202"></a> -<span class="sourceLineNo">203</span> return RecoverMetaState.RECOVER_META_SPLIT_LOGS;<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> @Override<a name="line.206"></a> -<span class="sourceLineNo">207</span> protected void toStringClassDetails(StringBuilder sb) {<a name="line.207"></a> -<span class="sourceLineNo">208</span> sb.append(getClass().getSimpleName());<a name="line.208"></a> -<span class="sourceLineNo">209</span> sb.append(" failedMetaServer=");<a name="line.209"></a> -<span class="sourceLineNo">210</span> sb.append(failedMetaServer);<a name="line.210"></a> -<span class="sourceLineNo">211</span> sb.append(", splitWal=");<a name="line.211"></a> -<span class="sourceLineNo">212</span> sb.append(shouldSplitWal);<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span><a name="line.214"></a> -<span class="sourceLineNo">215</span> @Override<a name="line.215"></a> -<span class="sourceLineNo">216</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.216"></a> -<span class="sourceLineNo">217</span> throws IOException {<a name="line.217"></a> -<span class="sourceLineNo">218</span> super.serializeStateData(serializer);<a name="line.218"></a> -<span class="sourceLineNo">219</span> MasterProcedureProtos.RecoverMetaStateData.Builder state =<a name="line.219"></a> -<span class="sourceLineNo">220</span> MasterProcedureProtos.RecoverMetaStateData.newBuilder().setShouldSplitWal(shouldSplitWal);<a name="line.220"></a> -<span class="sourceLineNo">221</span> if (failedMetaServer != null) {<a name="line.221"></a> -<span class="sourceLineNo">222</span> state.setFailedMetaServer(ProtobufUtil.toServerName(failedMetaServer));<a name="line.222"></a> -<span class="sourceLineNo">223</span> }<a name="line.223"></a> -<span class="sourceLineNo">224</span> state.setReplicaId(replicaId);<a name="line.224"></a> -<span class="sourceLineNo">225</span> serializer.serialize(state.build());<a name="line.225"></a> -<span class="sourceLineNo">226</span> }<a name="line.226"></a> -<span class="sourceLineNo">227</span><a name="line.227"></a> -<span class="sourceLineNo">228</span> @Override<a name="line.228"></a> -<span class="sourceLineNo">229</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.229"></a> -<span class="sourceLineNo">230</span> throws IOException {<a name="line.230"></a> -<span class="sourceLineNo">231</span> super.deserializeStateData(serializer);<a name="line.231"></a> -<span class="sourceLineNo">232</span> MasterProcedureProtos.RecoverMetaStateData state =<a name="line.232"></a> -<span class="sourceLineNo">233</span> serializer.deserialize(MasterProcedureProtos.RecoverMetaStateData.class);<a name="line.233"></a> -<span class="sourceLineNo">234</span> this.shouldSplitWal = state.hasShouldSplitWal() && state.getShouldSplitWal();<a name="line.234"></a> -<span class="sourceLineNo">235</span> this.failedMetaServer = state.hasFailedMetaServer() ?<a name="line.235"></a> -<span class="sourceLineNo">236</span> ProtobufUtil.toServerName(state.getFailedMetaServer()) : null;<a name="line.236"></a> -<span class="sourceLineNo">237</span> this.replicaId = state.hasReplicaId() ? state.getReplicaId() : RegionInfo.DEFAULT_REPLICA_ID;<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> @Override<a name="line.240"></a> -<span class="sourceLineNo">241</span> protected LockState acquireLock(MasterProcedureEnv env) {<a name="line.241"></a> -<span class="sourceLineNo">242</span> if (env.getProcedureScheduler().waitTableExclusiveLock(this, TableName.META_TABLE_NAME)) {<a name="line.242"></a> -<span class="sourceLineNo">243</span> return LockState.LOCK_EVENT_WAIT;<a name="line.243"></a> -<span class="sourceLineNo">244</span> }<a name="line.244"></a> -<span class="sourceLineNo">245</span> return LockState.LOCK_ACQUIRED;<a name="line.245"></a> -<span class="sourceLineNo">246</span> }<a name="line.246"></a> -<span class="sourceLineNo">247</span><a name="line.247"></a> -<span class="sourceLineNo">248</span> @Override<a name="line.248"></a> -<span class="sourceLineNo">249</span> protected void releaseLock(MasterProcedureEnv env) {<a name="line.249"></a> -<span class="sourceLineNo">250</span> env.getProcedureScheduler().wakeTableExclusiveLock(this, TableName.META_TABLE_NAME);<a name="line.250"></a> -<span class="sourceLineNo">251</span> }<a name="line.251"></a> -<span class="sourceLineNo">252</span><a name="line.252"></a> -<span class="sourceLineNo">253</span> @Override<a name="line.253"></a> -<span class="sourceLineNo">254</span> protected void completionCleanup(MasterProcedureEnv env) {<a name="line.254"></a> -<span class="sourceLineNo">255</span> ProcedurePrepareLatch.releaseLatch(syncLatch, this);<a name="line.255"></a> -<span class="sourceLineNo">256</span> }<a name="line.256"></a> -<span class="sourceLineNo">257</span><a name="line.257"></a> -<span class="sourceLineNo">258</span> @Override<a name="line.258"></a> -<span class="sourceLineNo">259</span> public TableName getTableName() {<a name="line.259"></a> -<span class="sourceLineNo">260</span> return TableName.META_TABLE_NAME;<a name="line.260"></a> -<span class="sourceLineNo">261</span> }<a name="line.261"></a> -<span class="sourceLineNo">262</span><a name="line.262"></a> -<span class="sourceLineNo">263</span> @Override<a name="line.263"></a> -<span class="sourceLineNo">264</span> public TableOperationType getTableOperationType() {<a name="line.264"></a> -<span class="sourceLineNo">265</span> return TableOperationType.ENABLE;<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> /**<a name="line.268"></a> -<span class="sourceLineNo">269</span> * @return true if failedMetaServer is not null (meta carrying server crashed) or meta is<a name="line.269"></a> -<span class="sourceLineNo">270</span> * already initialized<a name="line.270"></a> -<span class="sourceLineNo">271</span> */<a name="line.271"></a> -<span class="sourceLineNo">272</span> private boolean isRunRequired() {<a name="line.272"></a> -<span class="sourceLineNo">273</span> return failedMetaServer != null || !master.getAssignmentManager().isMetaInitialized();<a name="line.273"></a> -<span class="sourceLineNo">274</span> }<a name="line.274"></a> -<span class="sourceLineNo">275</span><a name="line.275"></a> -<span class="sourceLineNo">276</span> /**<a name="line.276"></a> -<span class="sourceLineNo">277</span> * Prepare for execution<a name="line.277"></a> -<span class="sourceLineNo">278</span> */<a name="line.278"></a> -<span class="sourceLineNo">279</span> private void prepare(MasterProcedureEnv env) {<a name="line.279"></a> -<span class="sourceLineNo">280</span> if (master == null) {<a name="line.280"></a> -<span class="sourceLineNo">281</span> master = env.getMasterServices();<a name="line.281"></a> -<span class="sourceLineNo">282</span> Preconditions.checkArgument(master != null);<a name="line.282"></a> -<span class="sourceLineNo">283</span> }<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">162</span> // NOTE: Make sure any fix or improvement done here is also done in SCP#handleRIT; the methods<a name="line.162"></a> +<span class="sourceLineNo">163</span> // have overlap.<a name="line.163"></a> +<span class="sourceLineNo">164</span> private void handleRIT(MasterProcedureEnv env, RegionInfo ri, ServerName crashedServerName) {<a name="line.164"></a> +<span class="sourceLineNo">165</span> AssignmentManager am = env.getAssignmentManager();<a name="line.165"></a> +<span class="sourceLineNo">166</span> RegionTransitionProcedure rtp = am.getRegionStates().getRegionTransitionProcedure(ri);<a name="line.166"></a> +<span class="sourceLineNo">167</span> if (rtp == null) {<a name="line.167"></a> +<span class="sourceLineNo">168</span> return; // Nothing to do. Not in RIT.<a name="line.168"></a> +<span class="sourceLineNo">169</span> }<a name="line.169"></a> +<span class="sourceLineNo">170</span> // Make sure the RIT is against this crashed server. In the case where there are many<a name="line.170"></a> +<span class="sourceLineNo">171</span> // processings of a crashed server -- backed up for whatever reason (slow WAL split)<a name="line.171"></a> +<span class="sourceLineNo">172</span> // -- then a previous SCP may have already failed an assign, etc., and it may have a<a name="line.172"></a> +<span class="sourceLineNo">173</span> // new location target; DO NOT fail these else we make for assign flux.<a name="line.173"></a> +<span class="sourceLineNo">174</span> ServerName rtpServerName = rtp.getServer(env);<a name="line.174"></a> +<span class="sourceLineNo">175</span> if (rtpServerName == null) {<a name="line.175"></a> +<span class="sourceLineNo">176</span> LOG.warn("RIT with ServerName null! " + rtp);<a name="line.176"></a> +<span class="sourceLineNo">177</span> } else if (rtpServerName.equals(crashedServerName)) {<a name="line.177"></a> +<span class="sourceLineNo">178</span> LOG.info("pid=" + getProcId() + " found RIT " + rtp + "; " +<a name="line.178"></a> +<span class="sourceLineNo">179</span> rtp.getRegionState(env).toShortString());<a name="line.179"></a> +<span class="sourceLineNo">180</span> rtp.remoteCallFailed(env, crashedServerName,<a name="line.180"></a> +<span class="sourceLineNo">181</span> new ServerCrashException(getProcId(), crashedServerName));<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><a name="line.184"></a> +<span class="sourceLineNo">185</span> @Override<a name="line.185"></a> +<span class="sourceLineNo">186</span> protected void rollbackState(MasterProcedureEnv env,<a name="line.186"></a> +<span class="sourceLineNo">187</span> MasterProcedureProtos.RecoverMetaState recoverMetaState)<a name="line.187"></a> +<span class="sourceLineNo">188</span> throws IOException, InterruptedException {<a name="line.188"></a> +<span class="sourceLineNo">189</span> // Can't rollback<a name="line.189"></a> +<span class="sourceLineNo">190</span> throw new UnsupportedOperationException("unhandled state=" + recoverMetaState);<a name="line.190"></a> +<span class="sourceLineNo">191</span> }<a name="line.191"></a> +<span class="sourceLineNo">192</span><a name="line.192"></a> +<span class="sourceLineNo">193</span> @Override<a name="line.193"></a> +<span class="sourceLineNo">194</span> protected MasterProcedureProtos.RecoverMetaState getState(int stateId) {<a name="line.194"></a> +<span class="sourceLineNo">195</span> return RecoverMetaState.forNumber(stateId);<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> @Override<a name="line.198"></a> +<span class="sourceLineNo">199</span> protected int getStateId(MasterProcedureProtos.RecoverMetaState recoverMetaState) {<a name="line.199"></a> +<span class="sourceLineNo">200</span> return recoverMetaState.getNumber();<a name="line.200"></a> +<span class="sourceLineNo">201</span> }<a name="line.201"></a> +<span class="sourceLineNo">202</span><a name="line.202"></a> +<span class="sourceLineNo">203</span> @Override<a name="line.203"></a> +<span class="sourceLineNo">204</span> protected MasterProcedureProtos.RecoverMetaState getInitialState() {<a name="line.204"></a> +<span class="sourceLineNo">205</span> return RecoverMetaState.RECOVER_META_SPLIT_LOGS;<a name="line.205"></a> +<span class="sourceLineNo">206</span> }<a name="line.206"></a> +<span class="sourceLineNo">207</span><a name="line.207"></a> +<span class="sourceLineNo">208</span> @Override<a name="line.208"></a> +<span class="sourceLineNo">209</span> protected void toStringClassDetails(StringBuilder sb) {<a name="line.209"></a> +<span class="sourceLineNo">210</span> sb.append(getClass().getSimpleName());<a name="line.210"></a> +<span class="sourceLineNo">211</span> sb.append(" failedMetaServer=");<a name="line.211"></a> +<span class="sourceLineNo">212</span> sb.append(failedMetaServer);<a name="line.212"></a> +<span class="sourceLineNo">213</span> sb.append(", splitWal=");<a name="line.213"></a> +<span class="sourceLineNo">214</span> sb.append(shouldSplitWal);<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span><a name="line.216"></a> +<span class="sourceLineNo">217</span> @Override<a name="line.217"></a> +<span class="sourceLineNo">218</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.218"></a> +<span class="sourceLineNo">219</span> throws IOException {<a name="line.219"></a> +<span class="sourceLineNo">220</span> super.serializeStateData(serializer);<a name="line.220"></a> +<span class="sourceLineNo">221</span> MasterProcedureProtos.RecoverMetaStateData.Builder state =<a name="line.221"></a> +<span class="sourceLineNo">222</span> MasterProcedureProtos.RecoverMetaStateData.newBuilder().setShouldSplitWal(shouldSplitWal);<a name="line.222"></a> +<span class="sourceLineNo">223</span> if (failedMetaServer != null) {<a name="line.223"></a> +<span class="sourceLineNo">224</span> state.setFailedMetaServer(ProtobufUtil.toServerName(failedMetaServer));<a name="line.224"></a> +<span class="sourceLineNo">225</span> }<a name="line.225"></a> +<span class="sourceLineNo">226</span> state.setReplicaId(replicaId);<a name="line.226"></a> +<span class="sourceLineNo">227</span> serializer.serialize(state.build());<a name="line.227"></a> +<span class="sourceLineNo">228</span> }<a name="line.228"></a> +<span class="sourceLineNo">229</span><a name="line.229"></a> +<span class="sourceLineNo">230</span> @Override<a name="line.230"></a> +<span class="sourceLineNo">231</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.231"></a> +<span class="sourceLineNo">232</span> throws IOException {<a name="line.232"></a> +<span class="sourceLineNo">233</span> super.deserializeStateData(serializer);<a name="line.233"></a> +<span class="sourceLineNo">234</span> MasterProcedureProtos.RecoverMetaStateData state =<a name="line.234"></a> +<span class="sourceLineNo">235</span> serializer.deserialize(MasterProcedureProtos.RecoverMetaStateData.class);<a name="line.235"></a> +<span class="sourceLineNo">236</span> this.shouldSplitWal = state.hasShouldSplitWal() && state.getShouldSplitWal();<a name="line.236"></a> +<span class="sourceLineNo">237</span> this.failedMetaServer = state.hasFailedMetaServer() ?<a name="line.237"></a> +<span class="sourceLineNo">238</span> ProtobufUtil.toServerName(state.getFailedMetaServer()) : null;<a name="line.238"></a> +<span class="sourceLineNo">239</span> this.replicaId = state.hasReplicaId() ? state.getReplicaId() : RegionInfo.DEFAULT_REPLICA_ID;<a name="line.239"></a> +<span class="sourceLineNo">240</span> }<a name="line.240"></a> +<span class="sourceLineNo">241</span><a name="line.241"></a> +<span class="sourceLineNo">242</span> @Override<a name="line.242"></a> +<span class="sourceLineNo">243</span> protected LockState acquireLock(MasterProcedureEnv env) {<a name="line.243"></a> +<span class="sourceLineNo">244</span> if (env.getProcedureScheduler().waitTableExclusiveLock(this, TableName.META_TABLE_NAME)) {<a name="line.244"></a> +<span class="sourceLineNo">245</span> return LockState.LOCK_EVENT_WAIT;<a name="line.245"></a> +<span class="sourceLineNo">246</span> }<a name="line.246"></a> +<span class="sourceLineNo">247</span> return LockState.LOCK_ACQUIRED;<a name="line.247"></a> +<span class="sourceLineNo">248</span> }<a name="line.248"></a> +<span class="sourceLineNo">249</span><a name="line.249"></a> +<span class="sourceLineNo">250</span> @Override<a name="line.250"></a> +<span class="sourceLineNo">251</span> protected void releaseLock(MasterProcedureEnv env) {<a name="line.251"></a> +<span class="sourceLineNo">252</span> env.getProcedureScheduler().wakeTableExclusiveLock(this, TableName.META_TABLE_NAME);<a name="line.252"></a> +<span class="sourceLineNo">253</span> }<a name="line.253"></a> +<span class="sourceLineNo">254</span><a name="line.254"></a> +<span class="sourceLineNo">255</span> @Override<a name="line.255"></a> +<span class="sourceLineNo">256</span> protected void completionCleanup(MasterProcedureEnv env) {<a name="line.256"></a> +<span class="sourceLineNo">257</span> ProcedurePrepareLatch.releaseLatch(syncLatch, this);<a name="line.257"></a> +<span class="sourceLineNo">258</span> }<a name="line.258"></a> +<span class="sourceLineNo">259</span><a name="line.259"></a> +<span class="sourceLineNo">260</span> @Override<a name="line.260"></a> +<span class="sourceLineNo">261</span> public TableName getTableName() {<a name="line.261"></a> +<span class="sourceLineNo">262</span> return TableName.META_TABLE_NAME;<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> @Override<a name="line.265"></a> +<span class="sourceLineNo">266</span> public TableOperationType getTableOperationType() {<a name="line.266"></a> +<span class="sourceLineNo">267</span> return TableOperationType.ENABLE;<a name="line.267"></a> +<span class="sourceLineNo">268</span> }<a name="line.268"></a> +<span class="sourceLineNo">269</span><a name="line.269"></a> +<span class="sourceLineNo">270</span> /**<a name="line.270"></a> +<span class="sourceLineNo">271</span> * @return true if failedMetaServer is not null (meta carrying server crashed) or meta is<a name="line.271"></a> +<span class="sourceLineNo">272</span> * already initialized<a name="line.272"></a> +<span class="sourceLineNo">273</span> */<a name="line.273"></a> +<span class="sourceLineNo">274</span> private boolean isRunRequired() {<a name="line.274"></a> +<span class="sourceLineNo">275</span> return failedMetaServer != null || !master.getAssignmentManager().isMetaInitialized();<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> /**<a name="line.278"></a> +<span class="sourceLineNo">279</span> * Prepare for execution<a name="line.279"></a> +<span class="sourceLineNo">280</span> */<a name="line.280"></a> +<span class="sourceLineNo">281</span> private void prepare(MasterProcedureEnv env) {<a name="line.281"></a> +<span class="sourceLineNo">282</span> if (master == null) {<a name="line.282"></a> +<span class="sourceLineNo">283</span> master = env.getMasterServices();<a name="line.283"></a> +<span class="sourceLineNo">284</span> Preconditions.checkArgument(master != null);<a name="line.284"></a> +<span class="sourceLineNo">285</span> }<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>