http://git-wip-us.apache.org/repos/asf/hbase-site/blob/991224b9/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.html index 70c0a84..f458c4c 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.html @@ -263,541 +263,547 @@ <span class="sourceLineNo">255</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.255"></a> <span class="sourceLineNo">256</span> }<a name="line.256"></a> <span class="sourceLineNo">257</span> } catch (IOException e) {<a name="line.257"></a> -<span class="sourceLineNo">258</span> LOG.warn("Error trying to merge regions " + RegionInfo.getShortNameToLog(regionsToMerge) +<a name="line.258"></a> -<span class="sourceLineNo">259</span> " in the table " + getTableName() + " (in state=" + state + ")", e);<a name="line.259"></a> -<span class="sourceLineNo">260</span><a name="line.260"></a> -<span class="sourceLineNo">261</span> setFailure("master-merge-regions", e);<a name="line.261"></a> -<span class="sourceLineNo">262</span> }<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> /**<a name="line.266"></a> -<span class="sourceLineNo">267</span> * To rollback {@link MergeTableRegionsProcedure}, two AssignProcedures are asynchronously<a name="line.267"></a> -<span class="sourceLineNo">268</span> * submitted for each region to be merged (rollback doesn't wait on the completion of the<a name="line.268"></a> -<span class="sourceLineNo">269</span> * AssignProcedures) . This can be improved by changing rollback() to support sub-procedures.<a name="line.269"></a> -<span class="sourceLineNo">270</span> * See HBASE-19851 for details.<a name="line.270"></a> -<span class="sourceLineNo">271</span> */<a name="line.271"></a> -<span class="sourceLineNo">272</span> @Override<a name="line.272"></a> -<span class="sourceLineNo">273</span> protected void rollbackState(<a name="line.273"></a> -<span class="sourceLineNo">274</span> final MasterProcedureEnv env,<a name="line.274"></a> -<span class="sourceLineNo">275</span> final MergeTableRegionsState state) throws IOException, InterruptedException {<a name="line.275"></a> -<span class="sourceLineNo">276</span> if (isTraceEnabled()) {<a name="line.276"></a> -<span class="sourceLineNo">277</span> LOG.trace(this + " rollback state=" + state);<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> try {<a name="line.280"></a> -<span class="sourceLineNo">281</span> switch (state) {<a name="line.281"></a> -<span class="sourceLineNo">282</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.282"></a> -<span class="sourceLineNo">283</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.283"></a> -<span class="sourceLineNo">284</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.284"></a> -<span class="sourceLineNo">285</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.285"></a> -<span class="sourceLineNo">286</span> String msg = this + " We are in the " + state + " state."<a name="line.286"></a> -<span class="sourceLineNo">287</span> + " It is complicated to rollback the merge operation that region server is working on."<a name="line.287"></a> -<span class="sourceLineNo">288</span> + " Rollback is not supported and we should let the merge operation to complete";<a name="line.288"></a> -<span class="sourceLineNo">289</span> LOG.warn(msg);<a name="line.289"></a> -<span class="sourceLineNo">290</span> // PONR<a name="line.290"></a> -<span class="sourceLineNo">291</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.291"></a> -<span class="sourceLineNo">292</span> case MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION:<a name="line.292"></a> -<span class="sourceLineNo">293</span> break;<a name="line.293"></a> -<span class="sourceLineNo">294</span> case MERGE_TABLE_REGIONS_CREATE_MERGED_REGION:<a name="line.294"></a> -<span class="sourceLineNo">295</span> cleanupMergedRegion(env);<a name="line.295"></a> -<span class="sourceLineNo">296</span> break;<a name="line.296"></a> -<span class="sourceLineNo">297</span> case MERGE_TABLE_REGIONS_CLOSE_REGIONS:<a name="line.297"></a> -<span class="sourceLineNo">298</span> rollbackCloseRegionsForMerge(env);<a name="line.298"></a> +<span class="sourceLineNo">258</span> String msg = "Error trying to merge regions " +<a name="line.258"></a> +<span class="sourceLineNo">259</span> RegionInfo.getShortNameToLog(regionsToMerge) + " in the table " + getTableName() +<a name="line.259"></a> +<span class="sourceLineNo">260</span> " (in state=" + state + ")";<a name="line.260"></a> +<span class="sourceLineNo">261</span> if (!isRollbackSupported(state)) {<a name="line.261"></a> +<span class="sourceLineNo">262</span> // We reach a state that cannot be rolled back. We just need to keep retry.<a name="line.262"></a> +<span class="sourceLineNo">263</span> LOG.warn(msg, e);<a name="line.263"></a> +<span class="sourceLineNo">264</span> } else {<a name="line.264"></a> +<span class="sourceLineNo">265</span> LOG.error(msg, e);<a name="line.265"></a> +<span class="sourceLineNo">266</span> setFailure("master-merge-regions", e);<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 Flow.HAS_MORE_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> /**<a name="line.272"></a> +<span class="sourceLineNo">273</span> * To rollback {@link MergeTableRegionsProcedure}, two AssignProcedures are asynchronously<a name="line.273"></a> +<span class="sourceLineNo">274</span> * submitted for each region to be merged (rollback doesn't wait on the completion of the<a name="line.274"></a> +<span class="sourceLineNo">275</span> * AssignProcedures) . This can be improved by changing rollback() to support sub-procedures.<a name="line.275"></a> +<span class="sourceLineNo">276</span> * See HBASE-19851 for details.<a name="line.276"></a> +<span class="sourceLineNo">277</span> */<a name="line.277"></a> +<span class="sourceLineNo">278</span> @Override<a name="line.278"></a> +<span class="sourceLineNo">279</span> protected void rollbackState(<a name="line.279"></a> +<span class="sourceLineNo">280</span> final MasterProcedureEnv env,<a name="line.280"></a> +<span class="sourceLineNo">281</span> final MergeTableRegionsState state) throws IOException, InterruptedException {<a name="line.281"></a> +<span class="sourceLineNo">282</span> if (isTraceEnabled()) {<a name="line.282"></a> +<span class="sourceLineNo">283</span> LOG.trace(this + " rollback state=" + state);<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> try {<a name="line.286"></a> +<span class="sourceLineNo">287</span> switch (state) {<a name="line.287"></a> +<span class="sourceLineNo">288</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.288"></a> +<span class="sourceLineNo">289</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.289"></a> +<span class="sourceLineNo">290</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.290"></a> +<span class="sourceLineNo">291</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.291"></a> +<span class="sourceLineNo">292</span> String msg = this + " We are in the " + state + " state."<a name="line.292"></a> +<span class="sourceLineNo">293</span> + " It is complicated to rollback the merge operation that region server is working on."<a name="line.293"></a> +<span class="sourceLineNo">294</span> + " Rollback is not supported and we should let the merge operation to complete";<a name="line.294"></a> +<span class="sourceLineNo">295</span> LOG.warn(msg);<a name="line.295"></a> +<span class="sourceLineNo">296</span> // PONR<a name="line.296"></a> +<span class="sourceLineNo">297</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.297"></a> +<span class="sourceLineNo">298</span> case MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION:<a name="line.298"></a> <span class="sourceLineNo">299</span> break;<a name="line.299"></a> -<span class="sourceLineNo">300</span> case MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION:<a name="line.300"></a> -<span class="sourceLineNo">301</span> postRollBackMergeRegions(env);<a name="line.301"></a> +<span class="sourceLineNo">300</span> case MERGE_TABLE_REGIONS_CREATE_MERGED_REGION:<a name="line.300"></a> +<span class="sourceLineNo">301</span> cleanupMergedRegion(env);<a name="line.301"></a> <span class="sourceLineNo">302</span> break;<a name="line.302"></a> -<span class="sourceLineNo">303</span> case MERGE_TABLE_REGIONS_PREPARE:<a name="line.303"></a> -<span class="sourceLineNo">304</span> break;<a name="line.304"></a> -<span class="sourceLineNo">305</span> default:<a name="line.305"></a> -<span class="sourceLineNo">306</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.306"></a> -<span class="sourceLineNo">307</span> }<a name="line.307"></a> -<span class="sourceLineNo">308</span> } catch (Exception e) {<a name="line.308"></a> -<span class="sourceLineNo">309</span> // This will be retried. 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i < regionsToMerge.length; ++i) {<a name="line.360"></a> -<span class="sourceLineNo">361</span> mergeTableRegionsMsg.addRegionInfo(ProtobufUtil.toRegionInfo(regionsToMerge[i]));<a name="line.361"></a> -<span class="sourceLineNo">362</span> }<a name="line.362"></a> -<span class="sourceLineNo">363</span> serializer.serialize(mergeTableRegionsMsg.build());<a name="line.363"></a> -<span class="sourceLineNo">364</span> }<a name="line.364"></a> -<span class="sourceLineNo">365</span><a name="line.365"></a> -<span class="sourceLineNo">366</span> @Override<a name="line.366"></a> -<span class="sourceLineNo">367</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.367"></a> -<span class="sourceLineNo">368</span> throws IOException {<a name="line.368"></a> -<span class="sourceLineNo">369</span> super.deserializeStateData(serializer);<a name="line.369"></a> -<span class="sourceLineNo">370</span><a name="line.370"></a> -<span class="sourceLineNo">371</span> final MasterProcedureProtos.MergeTableRegionsStateData mergeTableRegionsMsg =<a name="line.371"></a> -<span class="sourceLineNo">372</span> serializer.deserialize(MasterProcedureProtos.MergeTableRegionsStateData.class);<a name="line.372"></a> -<span class="sourceLineNo">373</span> setUser(MasterProcedureUtil.toUserInfo(mergeTableRegionsMsg.getUserInfo()));<a name="line.373"></a> -<span class="sourceLineNo">374</span><a name="line.374"></a> -<span class="sourceLineNo">375</span> assert(mergeTableRegionsMsg.getRegionInfoCount() == 2);<a name="line.375"></a> -<span class="sourceLineNo">376</span> regionsToMerge = new RegionInfo[mergeTableRegionsMsg.getRegionInfoCount()];<a name="line.376"></a> -<span class="sourceLineNo">377</span> for (int i = 0; i < regionsToMerge.length; i++) {<a name="line.377"></a> -<span class="sourceLineNo">378</span> regionsToMerge[i] = ProtobufUtil.toRegionInfo(mergeTableRegionsMsg.getRegionInfo(i));<a name="line.378"></a> -<span class="sourceLineNo">379</span> }<a name="line.379"></a> +<span class="sourceLineNo">303</span> case MERGE_TABLE_REGIONS_CLOSE_REGIONS:<a name="line.303"></a> +<span class="sourceLineNo">304</span> rollbackCloseRegionsForMerge(env);<a name="line.304"></a> +<span class="sourceLineNo">305</span> break;<a name="line.305"></a> +<span class="sourceLineNo">306</span> case MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION:<a name="line.306"></a> +<span class="sourceLineNo">307</span> postRollBackMergeRegions(env);<a name="line.307"></a> +<span class="sourceLineNo">308</span> break;<a name="line.308"></a> +<span class="sourceLineNo">309</span> case MERGE_TABLE_REGIONS_PREPARE:<a name="line.309"></a> +<span class="sourceLineNo">310</span> break;<a name="line.310"></a> +<span class="sourceLineNo">311</span> default:<a name="line.311"></a> +<span class="sourceLineNo">312</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.312"></a> +<span class="sourceLineNo">313</span> }<a name="line.313"></a> +<span class="sourceLineNo">314</span> } catch (Exception e) {<a name="line.314"></a> +<span class="sourceLineNo">315</span> // This will be retried. 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class="sourceLineNo">326</span> @Override<a name="line.326"></a> +<span class="sourceLineNo">327</span> protected boolean isRollbackSupported(final MergeTableRegionsState state) {<a name="line.327"></a> +<span class="sourceLineNo">328</span> switch (state) {<a name="line.328"></a> +<span class="sourceLineNo">329</span> case MERGE_TABLE_REGIONS_POST_OPERATION:<a name="line.329"></a> +<span class="sourceLineNo">330</span> case MERGE_TABLE_REGIONS_OPEN_MERGED_REGION:<a name="line.330"></a> +<span class="sourceLineNo">331</span> case MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION:<a name="line.331"></a> +<span class="sourceLineNo">332</span> case MERGE_TABLE_REGIONS_UPDATE_META:<a name="line.332"></a> +<span class="sourceLineNo">333</span> // It is not safe to rollback if we reach to these states.<a name="line.333"></a> +<span class="sourceLineNo">334</span> return false;<a name="line.334"></a> +<span class="sourceLineNo">335</span> default:<a name="line.335"></a> +<span class="sourceLineNo">336</span> break;<a name="line.336"></a> +<span class="sourceLineNo">337</span> }<a name="line.337"></a> +<span class="sourceLineNo">338</span> return true;<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> @Override<a name="line.341"></a> +<span class="sourceLineNo">342</span> protected MergeTableRegionsState getState(final int stateId) {<a name="line.342"></a> +<span class="sourceLineNo">343</span> return MergeTableRegionsState.forNumber(stateId);<a name="line.343"></a> +<span class="sourceLineNo">344</span> }<a name="line.344"></a> +<span class="sourceLineNo">345</span><a name="line.345"></a> +<span class="sourceLineNo">346</span> @Override<a name="line.346"></a> +<span class="sourceLineNo">347</span> protected int getStateId(final MergeTableRegionsState state) {<a name="line.347"></a> +<span class="sourceLineNo">348</span> return state.getNumber();<a name="line.348"></a> +<span class="sourceLineNo">349</span> }<a name="line.349"></a> +<span class="sourceLineNo">350</span><a name="line.350"></a> +<span class="sourceLineNo">351</span> @Override<a name="line.351"></a> +<span class="sourceLineNo">352</span> protected MergeTableRegionsState getInitialState() {<a name="line.352"></a> +<span class="sourceLineNo">353</span> return MergeTableRegionsState.MERGE_TABLE_REGIONS_PREPARE;<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> @Override<a name="line.356"></a> +<span class="sourceLineNo">357</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.357"></a> +<span class="sourceLineNo">358</span> throws IOException {<a name="line.358"></a> +<span class="sourceLineNo">359</span> super.serializeStateData(serializer);<a name="line.359"></a> 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class="sourceLineNo">369</span> serializer.serialize(mergeTableRegionsMsg.build());<a name="line.369"></a> +<span class="sourceLineNo">370</span> }<a name="line.370"></a> +<span class="sourceLineNo">371</span><a name="line.371"></a> +<span class="sourceLineNo">372</span> @Override<a name="line.372"></a> +<span class="sourceLineNo">373</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.373"></a> +<span class="sourceLineNo">374</span> throws IOException {<a name="line.374"></a> +<span class="sourceLineNo">375</span> super.deserializeStateData(serializer);<a name="line.375"></a> +<span class="sourceLineNo">376</span><a name="line.376"></a> +<span class="sourceLineNo">377</span> final MasterProcedureProtos.MergeTableRegionsStateData mergeTableRegionsMsg =<a name="line.377"></a> +<span class="sourceLineNo">378</span> serializer.deserialize(MasterProcedureProtos.MergeTableRegionsStateData.class);<a name="line.378"></a> +<span 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If we get an IOE, report it<a name="line.494"></a> +<span class="sourceLineNo">495</span> // along w/ the failure so can see why we are not mergeable at this time.<a name="line.495"></a> +<span class="sourceLineNo">496</span> IOException mergeableCheckIOE = null;<a name="line.496"></a> +<span class="sourceLineNo">497</span> boolean mergeable = false;<a name="line.497"></a> +<span class="sourceLineNo">498</span> RegionState current = regionStateA;<a name="line.498"></a> +<span class="sourceLineNo">499</span> try {<a name="line.499"></a> +<span class="sourceLineNo">500</span> mergeable = isMergeable(env, current);<a name="line.500"></a> +<span class="sourceLineNo">501</span> } catch (IOException e) {<a name="line.501"></a> +<span class="sourceLineNo">502</span> mergeableCheckIOE = e;<a name="line.502"></a> +<span class="sourceLineNo">503</span> }<a name="line.503"></a> +<span class="sourceLineNo">504</span> if (mergeable && mergeableCheckIOE == null) {<a name="line.504"></a> +<span class="sourceLineNo">505</span> current = regionStateB;<a name="line.505"></a> +<span class="sourceLineNo">506</span> try {<a name="line.506"></a> +<span class="sourceLineNo">507</span> mergeable = isMergeable(env, current);<a name="line.507"></a> +<span class="sourceLineNo">508</span> } catch (IOException e) {<a name="line.508"></a> +<span class="sourceLineNo">509</span> mergeableCheckIOE = e;<a name="line.509"></a> +<span class="sourceLineNo">510</span> }<a name="line.510"></a> <span class="sourceLineNo">511</span> }<a name="line.511"></a> -<span class="sourceLineNo">512</span><a name="line.512"></a> -<span class="sourceLineNo">513</span> // Update region states to Merging<a name="line.513"></a> -<span class="sourceLineNo">514</span> setRegionStateToMerging(env);<a name="line.514"></a> -<span class="sourceLineNo">515</span> return true;<a name="line.515"></a> -<span class="sourceLineNo">516</span> }<a name="line.516"></a> -<span class="sourceLineNo">517</span><a name="line.517"></a> -<span class="sourceLineNo">518</span> private boolean isMergeable(final MasterProcedureEnv env, final RegionState rs)<a name="line.518"></a> -<span class="sourceLineNo">519</span> throws IOException {<a name="line.519"></a> -<span class="sourceLineNo">520</span> GetRegionInfoResponse response =<a name="line.520"></a> -<span class="sourceLineNo">521</span> Util.getRegionInfoResponse(env, rs.getServerName(), rs.getRegion());<a name="line.521"></a> -<span class="sourceLineNo">522</span> return response.hasMergeable() && response.getMergeable();<a name="line.522"></a> -<span class="sourceLineNo">523</span> }<a name="line.523"></a> -<span class="sourceLineNo">524</span><a name="line.524"></a> -<span class="sourceLineNo">525</span> /**<a name="line.525"></a> -<span class="sourceLineNo">526</span> * Pre merge region action<a name="line.526"></a> -<span class="sourceLineNo">527</span> * @param env MasterProcedureEnv<a name="line.527"></a> -<span class="sourceLineNo">528</span> **/<a name="line.528"></a> -<span class="sourceLineNo">529</span> private void preMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.529"></a> -<span class="sourceLineNo">530</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.530"></a> -<span class="sourceLineNo">531</span> if (cpHost != null) {<a name="line.531"></a> -<span class="sourceLineNo">532</span> cpHost.preMergeRegionsAction(regionsToMerge, getUser());<a name="line.532"></a> -<span class="sourceLineNo">533</span> }<a name="line.533"></a> -<span class="sourceLineNo">534</span> // TODO: Clean up split and merge. 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merge table regions action.<a name="line.545"></a> -<span class="sourceLineNo">546</span> * @param env MasterProcedureEnv<a name="line.546"></a> -<span class="sourceLineNo">547</span> * @throws IOException<a name="line.547"></a> -<span class="sourceLineNo">548</span> */<a name="line.548"></a> -<span class="sourceLineNo">549</span> private void postRollBackMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.549"></a> -<span class="sourceLineNo">550</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.550"></a> -<span class="sourceLineNo">551</span> if (cpHost != null) {<a name="line.551"></a> -<span class="sourceLineNo">552</span> cpHost.postRollBackMergeRegionsAction(regionsToMerge, getUser());<a name="line.552"></a> -<span class="sourceLineNo">553</span> }<a name="line.553"></a> -<span class="sourceLineNo">554</span> }<a name="line.554"></a> -<span class="sourceLineNo">555</span><a name="line.555"></a> -<span class="sourceLineNo">556</span> /**<a name="line.556"></a> -<span class="sourceLineNo">557</span> * Set the region states to MERGING state<a name="line.557"></a> -<span class="sourceLineNo">558</span> * @param env MasterProcedureEnv<a name="line.558"></a> -<span class="sourceLineNo">559</span> * @throws IOException<a name="line.559"></a> -<span class="sourceLineNo">560</span> */<a name="line.560"></a> -<span class="sourceLineNo">561</span> public void setRegionStateToMerging(final MasterProcedureEnv env) throws IOException {<a name="line.561"></a> -<span class="sourceLineNo">562</span> // Set State.MERGING to regions to be merged<a name="line.562"></a> -<span class="sourceLineNo">563</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.563"></a> -<span class="sourceLineNo">564</span> regionStates.getRegionStateNode(regionsToMerge[0]).setState(State.MERGING);<a name="line.564"></a> -<span class="sourceLineNo">565</span> regionStates.getRegionStateNode(regionsToMerge[1]).setState(State.MERGING);<a name="line.565"></a> -<span class="sourceLineNo">566</span> }<a name="line.566"></a> -<span class="sourceLineNo">567</span><a name="line.567"></a> -<span class="sourceLineNo">568</span> /**<a name="line.568"></a> -<span class="sourceLineNo">569</span> * Rollback the region state change<a name="line.569"></a> -<span class="sourceLineNo">570</span> * Not used for now, since rollbackCloseRegionsForMerge() will mark regions as OPEN<a name="line.570"></a> -<span class="sourceLineNo">571</span> * @param env MasterProcedureEnv<a name="line.571"></a> -<span class="sourceLineNo">572</span> * @throws IOException<a name="line.572"></a> -<span class="sourceLineNo">573</span> */<a name="line.573"></a> -<span class="sourceLineNo">574</span> private void setRegionStateBackToOpen(final MasterProcedureEnv env) throws IOException {<a name="line.574"></a> -<span class="sourceLineNo">575</span> // revert region state to Open<a 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createMergedRegion(final MasterProcedureEnv env) throws IOException {<a name="line.586"></a> -<span class="sourceLineNo">587</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.587"></a> -<span class="sourceLineNo">588</span> final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), regionsToMerge[0].getTable());<a name="line.588"></a> -<span class="sourceLineNo">589</span> final FileSystem fs = mfs.getFileSystem();<a name="line.589"></a> -<span class="sourceLineNo">590</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.590"></a> -<span class="sourceLineNo">591</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[0], false);<a name="line.591"></a> -<span class="sourceLineNo">592</span> regionFs.createMergesDir();<a name="line.592"></a> -<span class="sourceLineNo">593</span><a name="line.593"></a> -<span class="sourceLineNo">594</span> mergeStoreFiles(env, regionFs, regionFs.getMergesDir());<a name="line.594"></a> -<span class="sourceLineNo">595</span> HRegionFileSystem regionFs2 = HRegionFileSystem.openRegionFromFileSystem(<a name="line.595"></a> -<span class="sourceLineNo">596</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[1], false);<a name="line.596"></a> -<span class="sourceLineNo">597</span> mergeStoreFiles(env, regionFs2, regionFs.getMergesDir());<a name="line.597"></a> -<span class="sourceLineNo">598</span><a name="line.598"></a> -<span class="sourceLineNo">599</span> regionFs.commitMergedRegion(mergedRegion);<a name="line.599"></a> -<span class="sourceLineNo">600</span><a name="line.600"></a> -<span class="sourceLineNo">601</span> //Prepare to create merged regions<a name="line.601"></a> -<span class="sourceLineNo">602</span> env.getAssignmentManager().getRegionStates().<a name="line.602"></a> -<span class="sourceLineNo">603</span> getOrCreateRegionStateNode(mergedRegion).setState(State.MERGING_NEW);<a 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regionFs, final Path mergedDir)<a name="line.614"></a> -<span class="sourceLineNo">615</span> throws IOException {<a name="line.615"></a> -<span class="sourceLineNo">616</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.616"></a> -<span class="sourceLineNo">617</span> final Configuration conf = env.getMasterConfiguration();<a name="line.617"></a> -<span class="sourceLineNo">618</span> final TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.618"></a> -<span class="sourceLineNo">619</span><a name="line.619"></a> -<span class="sourceLineNo">620</span> for (String family: regionFs.getFamilies()) {<a name="line.620"></a> -<span class="sourceLineNo">621</span> final ColumnFamilyDescriptor hcd = htd.getColumnFamily(Bytes.toBytes(family));<a name="line.621"></a> -<span class="sourceLineNo">622</span> final Collection<StoreFileInfo> storeFiles = regionFs.getStoreFiles(family);<a name="line.622"></a> -<span class="sourceLineNo">623</span><a name="line.623"></a> -<span class="sourceLineNo">624</span> if (storeFiles != null && storeFiles.size() > 0) {<a name="line.624"></a> -<span class="sourceLineNo">625</span> final CacheConfig cacheConf = new CacheConfig(conf, hcd);<a name="line.625"></a> -<span class="sourceLineNo">626</span> for (StoreFileInfo storeFileInfo: storeFiles) {<a name="line.626"></a> -<span class="sourceLineNo">627</span> // Create reference file(s) of the region in mergedDir<a name="line.627"></a> -<span class="sourceLineNo">628</span> regionFs.mergeStoreFile(mergedRegion, family, new HStoreFile(mfs.getFileSystem(),<a name="line.628"></a> -<span class="sourceLineNo">629</span> storeFileInfo, conf, cacheConf, hcd.getBloomFilterType(), true),<a name="line.629"></a> -<span class="sourceLineNo">630</span> mergedDir);<a name="line.630"></a> -<span class="sourceLineNo">631</span> }<a name="line.631"></a> -<span class="sourceLineNo">632</span> }<a name="line.632"></a> -<span class="sourceLineNo">633</span> }<a name="line.633"></a> -<span class="sourceLineNo">634</span> }<a name="line.634"></a> -<span class="sourceLineNo">635</span><a name="line.635"></a> -<span class="sourceLineNo">636</span> /**<a name="line.636"></a> -<span class="sourceLineNo">637</span> * Clean up merged region<a name="line.637"></a> -<span class="sourceLineNo">638</span> * @param env MasterProcedureEnv<a name="line.638"></a> -<span class="sourceLineNo">639</span> * @throws IOException<a name="line.639"></a> -<span class="sourceLineNo">640</span> */<a name="line.640"></a> -<span class="sourceLineNo">641</span> private void cleanupMergedRegion(final MasterProcedureEnv env) throws IOException {<a name="line.641"></a> -<span class="sourceLineNo">642</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.642"></a> -<span class="sourceLineNo">643</span> final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), regionsToMerge[0].getTable());<a name="line.643"></a> -<span class="sourceLineNo">644</span> final FileSystem fs = mfs.getFileSystem();<a name="line.644"></a> -<span class="sourceLineNo">645</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.645"></a> -<span class="sourceLineNo">646</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[0], false);<a name="line.646"></a> -<span class="sourceLineNo">647</span> regionFs.cleanupMergedRegion(mergedRegion);<a name="line.647"></a> -<span class="sourceLineNo">648</span> }<a name="line.648"></a> -<span class="sourceLineNo">649</span><a name="line.649"></a> -<span class="sourceLineNo">650</span> /**<a name="line.650"></a> -<span class="sourceLineNo">651</span> * Rollback close regions<a name="line.651"></a> -<span class="sourceLineNo">652</span> * @param env MasterProcedureEnv<a name="line.652"></a> -<span class="sourceLineNo">653</span> **/<a name="line.653"></a> -<span class="sourceLineNo">654</span> private void rollbackCloseRegionsForMerge(final MasterProcedureEnv env) throws IOException {<a name="line.654"></a> -<span class="sourceLineNo">655</span> // Check whether the region is closed; if so, open it in the same server<a name="line.655"></a> -<span class="sourceLineNo">656</span> final int regionReplication = getRegionReplication(env);<a name="line.656"></a> -<span class="sourceLineNo">657</span> final ServerName serverName = getServerName(env);<a name="line.657"></a> -<span class="sourceLineNo">658</span><a name="line.658"></a> -<span class="sourceLineNo">659</span> final AssignProcedure[] procs =<a name="line.659"></a> -<span class="sourceLineNo">660</span> new AssignProcedure[regionsToMerge.length * regionReplication];<a name="line.660"></a> -<span class="sourceLineNo">661</span> int procsIdx = 0;<a name="line.661"></a> -<span class="sourceLineNo">662</span> for (int i = 0; i < regionsToMerge.length; ++i) {<a name="line.662"></a> -<span class="sourceLineNo">663</span> for (int j = 0; j < regionReplication; ++j) {<a name="line.663"></a> -<span class="sourceLineNo">664</span> final RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(regionsToMerge[i], j);<a name="line.664"></a> -<span class="sourceLineNo">665</span> procs[procsIdx++] = env.getAssignmentManager().createAssignProcedure(hri, serverName);<a name="line.665"></a> -<span class="sourceLineNo">666</span> }<a name="line.666"></a> -<span class="sourceLineNo">667</span> }<a name="line.667"></a> -<span class="sourceLineNo">668</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<a name="line.668"></a> -<span class="sourceLineNo">669</span> }<a name="line.669"></a> -<span class="sourceLineNo">670</span><a name="line.670"></a> -<span class="sourceLineNo">671</span> private UnassignProcedure[] createUnassignProcedures(final MasterProcedureEnv env,<a name="line.671"></a> -<span class="sourceLineNo">672</span> final int regionReplication) {<a name="line.672"></a> -<span class="sourceLineNo">673</span> final UnassignProcedure[] procs =<a name="line.673"></a> -<span class="sourceLineNo">674</span> new UnassignProcedure[regionsToMerge.length * regionReplication];<a name="line.674"></a> -<span class="sourceLineNo">675</span> int procsIdx = 0;<a name="line.675"></a> -<span class="sourceLineNo">676</span> for (int i = 0; i < regionsToMerge.length; ++i) {<a name="line.676"></a> -<span class="sourceLineNo">677</span> for (int j = 0; j < regionReplication; ++j) {<a name="line.677"></a> -<span class="sourceLineNo">678</span> final RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(regionsToMerge[i], j);<a name="line.678"></a> -<span class="sourceLineNo">679</span> procs[procsIdx++] = env.getAssignmentManager().createUnassignProcedure(hri,null,true);<a name="line.679"></a> -<span class="sourceLineNo">680</span> }<a name="line.680"></a> -<span class="sourceLineNo">681</span> }<a name="line.681"></a> -<span class="sourceLineNo">682</span> return procs;<a name="line.682"></a> -<span class="sourceLineNo">683</span> }<a name="line.683"></a> -<span class="sourceLineNo">684</span><a name="line.684"></a> -<span class="sourceLineNo">685</span> private AssignProcedure[] createAssignProcedures(final MasterProcedureEnv env,<a name="line.685"></a> -<span class="sourceLineNo">686</span> final int regionReplication) {<a name="line.686"></a> -<span class="sourceLineNo">687</span> final ServerName targetServer = getServerName(env);<a name="line.687"></a> -<span class="sourceLineNo">688</span> final AssignProcedure[] procs = new AssignProcedure[regionReplication];<a name="line.688"></a> -<span class="sourceLineNo">689</span> for (int i = 0; i < procs.length; ++i) {<a name="line.689"></a> -<span class="sourceLineNo">690</span> final RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(mergedRegion, i);<a name="line.690"></a> -<span class="sourceLineNo">691</span> procs[i] = env.getAssignmentManager().createAssignProcedure(hri, targetServer);<a name="line.691"></a> -<span class="sourceLineNo">692</span> }<a name="line.692"></a> -<span class="sourceLineNo">693</span> return procs;<a name="line.693"></a> -<span class="sourceLineNo">694</span> }<a name="line.694"></a> -<span class="sourceLineNo">695</span><a name="line.695"></a> -<span class="sourceLineNo">696</span> private int getRegionReplication(final MasterProcedureEnv env) throws IOException {<a name="line.696"></a> -<span class="sourceLineNo">697</span> final TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.697"></a> -<span class="sourceLineNo">698</span> return htd.getRegionReplication();<a name="line.698"></a> -<span class="sourceLineNo">699</span> }<a name="line.699"></a> -<span class="sourceLineNo">700</span><a name="line.700"></a> -<span class="sourceLineNo">701</span> /**<a name="line.701"></a> -<span class="sourceLineNo">702</span> * Post merge region action<a name="line.702"></a> -<span class="sourceLineNo">703</span> * @param env MasterProcedureEnv<a name="line.703"></a> -<span class="sourceLineNo">704</span> **/<a name="line.704"></a> -<span class="sourceLineNo">705</span> private void preMergeRegionsCommit(final MasterProcedureEnv env) throws IOException {<a name="line.705"></a> -<span class="sourceLineNo">706</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.706"></a> -<span class="sourceLineNo">707</span> if (cpHost != null) {<a name="line.707"></a> -<span class="sourceLineNo">708</span> @MetaMutationAnnotation<a name="line.708"></a> -<span class="sourceLineNo">709</span> final List<Mutation> metaEntries = new ArrayList<Mutation>();<a name="line.709"></a> -<span class="sourceLineNo">710</span> cpHost.preMergeRegionsCommit(regionsToMerge, metaEntries, getUser());<a name="line.710"></a> -<span class="sourceLineNo">711</span> try {<a name="line.711"></a> -<span class="sourceLineNo">712</span> for (Mutation p : metaEntries) {<a name="line.712"></a> -<span class="sourceLineNo">713</span> RegionInfo.parseRegionName(p.getRow());<a name="line.713"></a> -<span class="sourceLineNo">714</span> }<a name="line.714"></a> -<span class="sourceLineNo">715</span> } catch (IOException e) {<a name="line.715"></a> -<span class="sourceLineNo">716</span> LOG.error("Row key of mutation from coprocessor is not parsable as region name."<a name="line.716"></a> -<span class="sourceLineNo">717</span> + "Mutations from coprocessor should only be for hbase:meta table.", e);<a name="line.717"></a> -<span class="sourceLineNo">718</span> throw e;<a name="line.718"></a> -<span class="sourceLineNo">719</span> }<a name="line.719"></a> -<span class="sourceLineNo">720</span> }<a name="line.720"></a> -<span class="sourceLineNo">721</span> }<a name="line.721"></a> -<span class="sourceLineNo">722</span><a name="line.722"></a> -<span class="sourceLineNo">723</span> /**<a name="line.723"></a> -<span class="sourceLineNo">724</span> * Add merged region to META and delete original regions.<a name="line.724"></a> -<span class="sourceLineNo">725</span> */<a name="line.725"></a> -<span class="sourceLineNo">726</span> private void updateMetaForMergedRegions(final MasterProcedureEnv env)<a name="line.726"></a> -<span class="sourceLineNo">727</span> throws IOException, ProcedureYieldException {<a name="line.727"></a> -<span class="sourceLineNo">728</span> final ServerName serverName = getServerName(env);<a name="line.728"></a> -<span class="sourceLineNo">729</span> env.getAssignmentManager().markRegionAsMerged(mergedRegion, serverName,<a name="line.729"></a> -<span class="sourceLineNo">730</span> regionsToMerge[0], regionsToMerge[1]);<a name="line.730"></a> -<span class="sourceLineNo">731</span> }<a name="line.731"></a> -<span class="sourceLineNo">732</span><a name="line.732"></a> -<span class="sourceLineNo">733</span> /**<a name="line.733"></a> -<span 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-<span class="sourceLineNo">745</span> * Post merge region action<a name="line.745"></a> -<span class="sourceLineNo">746</span> * @param env MasterProcedureEnv<a name="line.746"></a> -<span class="sourceLineNo">747</span> **/<a name="line.747"></a> -<span class="sourceLineNo">748</span> private void postCompletedMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.748"></a> -<span class="sourceLineNo">749</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.749"></a> -<span class="sourceLineNo">750</span> if (cpHost != null) {<a name="line.750"></a> -<span class="sourceLineNo">751</span> cpHost.postCompletedMergeRegionsAction(regionsToMerge, mergedRegion, getUser());<a name="line.751"></a> -<span class="sourceLineNo">752</span> }<a name="line.752"></a> -<span class="sourceLineNo">753</span> }<a name="line.753"></a> -<span class="sourceLineNo">754</span><a name="line.754"></a> -<span class="sourceLineNo">755</span> /**<a name="line.755"></a> -<span class="sourceLineNo">756</span> * The procedure could be restarted from a different machine. If the variable is null, we need to<a name="line.756"></a> -<span class="sourceLineNo">757</span> * retrieve it.<a name="line.757"></a> -<span class="sourceLineNo">758</span> * @param env MasterProcedureEnv<a name="line.758"></a> -<span class="sourceLineNo">759</span> * @return serverName<a name="line.759"></a> -<span class="sourceLineNo">760</span> */<a name="line.760"></a> -<span class="sourceLineNo">761</span> private ServerName getServerName(final MasterProcedureEnv env) {<a name="line.761"></a> -<span class="sourceLineNo">762</span> if (regionLocation == null) {<a name="line.762"></a> -<span class="sourceLineNo">763</span> regionLocation = env.getAssignmentManager().getRegionStates().<a name="line.763"></a> -<span class="sourceLineNo">764</span> getRegionServerOfRegion(regionsToMerge[0]);<a name="line.764"></a> -<span class="sourceLineNo">765</span> // May still be null here but return null and let caller deal.<a name="line.765"></a> -<span class="sourceLineNo">766</span> // Means we lost the in-memory-only location. 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If the variable is null, we need to<a name="line.774"></a> -<span class="sourceLineNo">775</span> * retrieve it.<a name="line.775"></a> -<span class="sourceLineNo">776</span> * @return traceEnabled<a name="line.776"></a> -<span class="sourceLineNo">777</span> */<a name="line.777"></a> -<span class="sourceLineNo">778</span> private Boolean isTraceEnabled() {<a name="line.778"></a> -<span class="sourceLineNo">779</span> if (traceEnabled == null) {<a name="line.779"></a> -<span class="sourceLineNo">780</span> traceEnabled = LOG.isTraceEnabled();<a name="line.780"></a> -<span class="sourceLineNo">781</span> }<a name="line.781"></a> -<span class="sourceLineNo">782</span> return traceEnabled;<a name="line.782"></a> -<span class="sourceLineNo">783</span> }<a name="line.783"></a> -<span class="sourceLineNo">784</span><a name="line.784"></a> -<span class="sourceLineNo">785</span> /**<a name="line.785"></a> -<span class="sourceLineNo">786</span> * @return The merged region. Maybe be null if called to early or we failed.<a name="line.786"></a> -<span class="sourceLineNo">787</span> */<a name="line.787"></a> -<span class="sourceLineNo">788</span> @VisibleForTesting<a name="line.788"></a> -<span class="sourceLineNo">789</span> public RegionInfo getMergedRegion() {<a name="line.789"></a> -<span class="sourceLineNo">790</span> return this.mergedRegion;<a name="line.790"></a> -<span class="sourceLineNo">791</span> }<a name="line.791"></a> -<span class="sourceLineNo">792</span>}<a name="line.792"></a> +<span class="sourceLineNo">512</span> if (!mergeable) {<a name="line.512"></a> +<span class="sourceLineNo">513</span> IOException e = new IOException(current.getRegion().getShortNameToLog() + " NOT mergeable");<a name="line.513"></a> +<span class="sourceLineNo">514</span> if (mergeableCheckIOE != null) e.initCause(mergeableCheckIOE);<a name="line.514"></a> +<span class="sourceLineNo">515</span> super.setFailure(getClass().getSimpleName(), e);<a name="line.515"></a> +<span class="sourceLineNo">516</span> return false;<a name="line.516"></a> +<span class="sourceLineNo">517</span> }<a name="line.517"></a> +<span class="sourceLineNo">518</span><a name="line.518"></a> +<span class="sourceLineNo">519</span> // Update region states to Merging<a name="line.519"></a> +<span class="sourceLineNo">520</span> setRegionStateToMerging(env);<a name="line.520"></a> +<span class="sourceLineNo">521</span> return true;<a name="line.521"></a> +<span class="sourceLineNo">522</span> }<a name="line.522"></a> +<span class="sourceLineNo">523</span><a name="line.523"></a> +<span class="sourceLineNo">524</span> private boolean isMergeable(final MasterProcedureEnv env, final RegionState rs)<a name="line.524"></a> +<span class="sourceLineNo">525</span> throws IOException {<a name="line.525"></a> +<span class="sourceLineNo">526</span> GetRegionInfoResponse response =<a name="line.526"></a> +<span class="sourceLineNo">527</span> Util.getRegionInfoResponse(env, rs.getServerName(), rs.getRegion());<a name="line.527"></a> +<span class="sourceLineNo">528</span> return response.hasMergeable() && response.getMergeable();<a name="line.528"></a> +<span class="sourceLineNo">529</span> }<a name="line.529"></a> +<span class="sourceLineNo">530</span><a name="line.530"></a> +<span class="sourceLineNo">531</span> /**<a name="line.531"></a> +<span class="sourceLineNo">532</span> * Pre merge region action<a name="line.532"></a> +<span class="sourceLineNo">533</span> * @param env MasterProcedureEnv<a name="line.533"></a> +<span class="sourceLineNo">534</span> **/<a name="line.534"></a> +<span class="sourceLineNo">535</span> private void preMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.535"></a> +<span class="sourceLineNo">536</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.536"></a> +<span class="sourceLineNo">537</span> if (cpHost != null) {<a name="line.537"></a> +<span class="sourceLineNo">538</span> cpHost.preMergeRegionsAction(regionsToMerge, getUser());<a name="line.538"></a> +<span class="sourceLineNo">539</span> }<a name="line.539"></a> +<span class="sourceLineNo">540</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.540"></a> +<span class="sourceLineNo">541</span> try {<a name="line.541"></a> +<span class="sourceLineNo">542</span> env.getMasterServices().getMasterQuotaManager().onRegionMerged(this.mergedRegion);<a name="line.542"></a> +<span class="sourceLineNo">543</span> } catch (QuotaExceededException e) {<a name="line.543"></a> +<span class="sourceLineNo">544</span> env.getAssignmentManager().getRegionNormalizer().planSkipped(this.mergedRegion,<a name="line.544"></a> +<span class="sourceLineNo">545</span> NormalizationPlan.PlanType.MERGE);<a name="line.545"></a> +<span class="sourceLineNo">546</span> throw e;<a name="line.546"></a> +<span class="sourceLineNo">547</span> }<a name="line.547"></a> +<span class="sourceLineNo">548</span> }<a name="line.548"></a> +<span class="sourceLineNo">549</span><a name="line.549"></a> +<span class="sourceLineNo">550</span> /**<a name="line.550"></a> +<span class="sourceLineNo">551</span> * Action after rollback a merge table regions action.<a name="line.551"></a> +<span class="sourceLineNo">552</span> * @param env MasterProcedureEnv<a name="line.552"></a> +<span class="sourceLineNo">553</span> * @throws IOException<a name="line.553"></a> +<span class="sourceLineNo">554</span> */<a name="line.554"></a> +<span class="sourceLineNo">555</span> private void postRollBackMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.555"></a> +<span class="sourceLineNo">556</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.556"></a> +<span class="sourceLineNo">557</span> if (cpHost != null) {<a name="line.557"></a> +<span class="sourceLineNo">558</span> cpHost.postRollBackMergeRegionsAction(regionsToMerge, getUser());<a name="line.558"></a> +<span class="sourceLineNo">559</span> }<a name="line.559"></a> +<span class="sourceLineNo">560</span> }<a name="line.560"></a> +<span class="sourceLineNo">561</span><a name="line.561"></a> +<span class="sourceLineNo">562</span> /**<a name="line.562"></a> +<span class="sourceLineNo">563</span> * Set the region states to MERGING state<a name="line.563"></a> +<span class="sourceLineNo">564</span> * @param env MasterProcedureEnv<a name="line.564"></a> +<span class="sourceLineNo">565</span> * @throws IOException<a name="line.565"></a> +<span class="sourceLineNo">566</span> */<a name="line.566"></a> +<span class="sourceLineNo">567</span> public void setRegionStateToMerging(final MasterProcedureEnv env) throws IOException {<a name="line.567"></a> +<span class="sourceLineNo">568</span> // Set State.MERGING to regions to be merged<a name="line.568"></a> +<span class="sourceLineNo">569</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.569"></a> +<span class="sourceLineNo">570</span> regionStates.getRegionStateNode(regionsToMerge[0]).setState(State.MERGING);<a name="line.570"></a> +<span class="sourceLineNo">571</span> regionStates.getRegionStateNode(regionsToMerge[1]).setState(State.MERGING);<a name="line.571"></a> +<span class="sourceLineNo">572</span> }<a name="line.572"></a> +<span class="sourceLineNo">573</span><a name="line.573"></a> +<span class="sourceLineNo">574</span> /**<a name="line.574"></a> +<span class="sourceLineNo">575</span> * Rollback the region state change<a name="line.575"></a> +<span class="sourceLineNo">576</span> * Not used for now, since rollbackCloseRegionsForMerge() will mark regions as OPEN<a name="line.576"></a> +<span class="sourceLineNo">577</span> * @param env MasterProcedureEnv<a name="line.577"></a> +<span class="sourceLineNo">578</span> * @throws IOException<a name="line.578"></a> +<span class="sourceLineNo">579</span> */<a name="line.579"></a> +<span class="sourceLineNo">580</span> private void setRegionStateBackToOpen(final MasterProcedureEnv env) throws IOException {<a name="line.580"></a> +<span class="sourceLineNo">581</span> // revert region state to Open<a name="line.581"></a> +<span class="sourceLineNo">582</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.582"></a> +<span class="sourceLineNo">583</span> regionStates.getRegionStateNode(regionsToMerge[0]).setState(State.OPEN);<a name="line.583"></a> +<span class="sourceLineNo">584</span> regionStates.getRegionStateNode(regionsToMerge[1]).setState(State.OPEN);<a name="line.584"></a> +<span class="sourceLineNo">585</span> }<a name="line.585"></a> +<span class="sourceLineNo">586</span><a name="line.586"></a> +<span class="sourceLineNo">587</span> /**<a name="line.587"></a> +<span class="sourceLineNo">588</span> * Create merged region<a name="line.588"></a> +<span class="sourceLineNo">589</span> * @param env MasterProcedureEnv<a name="line.589"></a> +<span class="sourceLineNo">590</span> * @throws IOException<a name="line.590"></a> +<span class="sourceLineNo">591</span> */<a name="line.591"></a> +<span class="sourceLineNo">592</span> private void createMergedRegion(final MasterProcedureEnv env) throws IOException {<a name="line.592"></a> +<span class="sourceLineNo">593</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.593"></a> +<span class="sourceLineNo">594</span> final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), regionsToMerge[0].getTable());<a name="line.594"></a> +<span class="sourceLineNo">595</span> final FileSystem fs = mfs.getFileSystem();<a name="line.595"></a> +<span class="sourceLineNo">596</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.596"></a> +<span class="sourceLineNo">597</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[0], false);<a name="line.597"></a> +<span class="sourceLineNo">598</span> regionFs.createMergesDir();<a name="line.598"></a> +<span class="sourceLineNo">599</span><a name="line.599"></a> +<span class="sourceLineNo">600</span> mergeStoreFiles(env, regionFs, regionFs.getMergesDir());<a name="line.600"></a> +<span class="sourceLineNo">601</span> HRegionFileSystem regionFs2 = HRegionFileSystem.openRegionFromFileSystem(<a name="line.601"></a> +<span class="sourceLineNo">602</span> env.getMasterConfiguration(), fs, tabledir, regionsToMerge[1], false);<a name="line.602"></a> +<span class="sourceLineNo">603</span> mergeStoreFiles(env, regionFs2, regionFs.getMergesDir());<a name="line.603"></a> +<span class="sourceLineNo">604</span><a name="line.604"></a> +<span class="sourceLineNo">605</span> regionFs.commitMergedRegion(mergedRegion);<a name="line.605"></a> +<span class="sourceLineNo">606</span><a name="line.606"></a> +<span class="sourceLineNo">607</span> //Prepare to create merged regions<a name="line.607"></a> +<span class="sourceLineNo">608</span> env.getAssignmentManager().getRegionStates().<a name="line.608"></a> +<span class="sourceLineNo">609</span> getOrCreateRegionStateNode(mergedRegion).setState(State.MERGING_NEW);<a name="line.609"></a> +<span class="sourceLineNo">610</span> }<a name="line.610"></a> +<span class="sourceLineNo">611</span><a name="line.611"></a> +<span class="sourceLineNo">612</span> /**<a name="line.612"></a> +<span class="sourceLineNo">613</span> * Create reference file(s) of merging regions under the merges directory<a name="line.613"></a> +<span class="sourceLineNo">614</span> * @param env MasterProcedureEnv<a name="line.614"></a> +<span class="sourceLineNo">615</span> * @param regionFs region file system<a name="line.615"></a> +<span class="sourceLineNo">616</span> * @param mergedDir the temp directory of merged region<a name="line.616"></a> +<span class="sourceLineNo">617</span> * @throws IOException<a name="line.617"></a> +<span class="sourceLineNo">618</span> */<a name="line.618"></a> +<span class="sourceLineNo">619</span> private void mergeStoreFiles(<a name="line.619"></a> +<span class="sourceLineNo">620</span> fin
<TRUNCATED>
