http://git-wip-us.apache.org/repos/asf/hbase-site/blob/991224b9/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.StoreFileSplitter.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.StoreFileSplitter.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.StoreFileSplitter.html index 4f5b33a..4361237 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.StoreFileSplitter.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.StoreFileSplitter.html @@ -278,567 +278,568 @@ <span class="sourceLineNo">270</span> } else {<a name="line.270"></a> <span class="sourceLineNo">271</span> LOG.error(msg, e);<a name="line.271"></a> <span class="sourceLineNo">272</span> setFailure(e);<a name="line.272"></a> -<span class="sourceLineNo">273</span> }<a name="line.273"></a> -<span class="sourceLineNo">274</span> }<a name="line.274"></a> -<span class="sourceLineNo">275</span> // if split fails, need to call ((HRegion)parent).clearSplit() when it is a force split<a name="line.275"></a> -<span class="sourceLineNo">276</span> return Flow.HAS_MORE_STATE;<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> /**<a name="line.279"></a> -<span class="sourceLineNo">280</span> * To rollback {@link SplitTableRegionProcedure}, an AssignProcedure is asynchronously<a name="line.280"></a> -<span class="sourceLineNo">281</span> * submitted for parent region to be split (rollback doesn't wait on the completion of the<a name="line.281"></a> -<span class="sourceLineNo">282</span> * AssignProcedure) . This can be improved by changing rollback() to support sub-procedures.<a name="line.282"></a> -<span class="sourceLineNo">283</span> * See HBASE-19851 for details.<a name="line.283"></a> -<span class="sourceLineNo">284</span> */<a name="line.284"></a> -<span class="sourceLineNo">285</span> @Override<a name="line.285"></a> -<span class="sourceLineNo">286</span> protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.286"></a> -<span class="sourceLineNo">287</span> throws IOException, InterruptedException {<a name="line.287"></a> -<span class="sourceLineNo">288</span> if (isTraceEnabled()) {<a name="line.288"></a> -<span class="sourceLineNo">289</span> LOG.trace(this + " rollback state=" + state);<a name="line.289"></a> -<span class="sourceLineNo">290</span> }<a name="line.290"></a> -<span class="sourceLineNo">291</span><a name="line.291"></a> -<span class="sourceLineNo">292</span> try {<a name="line.292"></a> -<span class="sourceLineNo">293</span> switch (state) {<a name="line.293"></a> -<span class="sourceLineNo">294</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.294"></a> -<span class="sourceLineNo">295</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.295"></a> -<span class="sourceLineNo">296</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.296"></a> -<span class="sourceLineNo">297</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.297"></a> -<span class="sourceLineNo">298</span> // PONR<a name="line.298"></a> -<span class="sourceLineNo">299</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.299"></a> -<span class="sourceLineNo">300</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.300"></a> -<span class="sourceLineNo">301</span> break;<a name="line.301"></a> -<span class="sourceLineNo">302</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.302"></a> -<span class="sourceLineNo">303</span> // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.303"></a> -<span class="sourceLineNo">304</span> break;<a name="line.304"></a> -<span class="sourceLineNo">305</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.305"></a> -<span class="sourceLineNo">306</span> openParentRegion(env);<a name="line.306"></a> -<span class="sourceLineNo">307</span> break;<a name="line.307"></a> -<span class="sourceLineNo">308</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.308"></a> -<span class="sourceLineNo">309</span> postRollBackSplitRegion(env);<a name="line.309"></a> -<span class="sourceLineNo">310</span> break;<a name="line.310"></a> -<span class="sourceLineNo">311</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.311"></a> -<span class="sourceLineNo">312</span> break; // nothing to do<a name="line.312"></a> -<span class="sourceLineNo">313</span> default:<a name="line.313"></a> -<span class="sourceLineNo">314</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.314"></a> -<span class="sourceLineNo">315</span> }<a name="line.315"></a> -<span class="sourceLineNo">316</span> } catch (IOException e) {<a name="line.316"></a> -<span class="sourceLineNo">317</span> // This will be retried. 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default:<a name="line.338"></a> -<span class="sourceLineNo">339</span> break;<a name="line.339"></a> -<span class="sourceLineNo">340</span> }<a name="line.340"></a> -<span class="sourceLineNo">341</span> return true;<a name="line.341"></a> -<span class="sourceLineNo">342</span> }<a name="line.342"></a> -<span class="sourceLineNo">343</span><a name="line.343"></a> -<span class="sourceLineNo">344</span> @Override<a name="line.344"></a> -<span class="sourceLineNo">345</span> protected SplitTableRegionState getState(final int stateId) {<a name="line.345"></a> -<span class="sourceLineNo">346</span> return SplitTableRegionState.forNumber(stateId);<a name="line.346"></a> -<span class="sourceLineNo">347</span> }<a name="line.347"></a> -<span class="sourceLineNo">348</span><a name="line.348"></a> -<span class="sourceLineNo">349</span> @Override<a name="line.349"></a> -<span class="sourceLineNo">350</span> protected int getStateId(final SplitTableRegionState state) {<a name="line.350"></a> -<span class="sourceLineNo">351</span> return state.getNumber();<a name="line.351"></a> -<span class="sourceLineNo">352</span> }<a name="line.352"></a> -<span class="sourceLineNo">353</span><a name="line.353"></a> -<span class="sourceLineNo">354</span> @Override<a name="line.354"></a> -<span class="sourceLineNo">355</span> protected SplitTableRegionState getInitialState() {<a name="line.355"></a> -<span class="sourceLineNo">356</span> return SplitTableRegionState.SPLIT_TABLE_REGION_PREPARE;<a name="line.356"></a> -<span class="sourceLineNo">357</span> }<a name="line.357"></a> -<span class="sourceLineNo">358</span><a name="line.358"></a> -<span class="sourceLineNo">359</span> @Override<a name="line.359"></a> -<span class="sourceLineNo">360</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.360"></a> -<span class="sourceLineNo">361</span> throws IOException {<a name="line.361"></a> -<span class="sourceLineNo">362</span> super.serializeStateData(serializer);<a name="line.362"></a> -<span class="sourceLineNo">363</span><a name="line.363"></a> -<span class="sourceLineNo">364</span> final MasterProcedureProtos.SplitTableRegionStateData.Builder splitTableRegionMsg =<a name="line.364"></a> -<span class="sourceLineNo">365</span> MasterProcedureProtos.SplitTableRegionStateData.newBuilder()<a name="line.365"></a> -<span class="sourceLineNo">366</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.366"></a> -<span class="sourceLineNo">367</span> .setParentRegionInfo(ProtobufUtil.toRegionInfo(getRegion()))<a name="line.367"></a> -<span class="sourceLineNo">368</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_1_RI))<a name="line.368"></a> -<span class="sourceLineNo">369</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_2_RI));<a name="line.369"></a> -<span class="sourceLineNo">370</span> serializer.serialize(splitTableRegionMsg.build());<a name="line.370"></a> 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class="sourceLineNo">434</span> RegionInfo parentHRI = node.getRegionInfo();<a name="line.434"></a> -<span class="sourceLineNo">435</span> // Lookup the parent HRI state from the AM, which has the latest updated info.<a name="line.435"></a> -<span class="sourceLineNo">436</span> // Protect against the case where concurrent SPLIT requests came in and succeeded<a name="line.436"></a> -<span class="sourceLineNo">437</span> // just before us.<a name="line.437"></a> -<span class="sourceLineNo">438</span> if (node.isInState(State.SPLIT)) {<a name="line.438"></a> -<span class="sourceLineNo">439</span> LOG.info("Split of " + parentHRI + " skipped; state is already SPLIT");<a name="line.439"></a> -<span class="sourceLineNo">440</span> return false;<a name="line.440"></a> -<span class="sourceLineNo">441</span> }<a name="line.441"></a> -<span class="sourceLineNo">442</span> if (parentHRI.isSplit() || parentHRI.isOffline()) {<a name="line.442"></a> -<span class="sourceLineNo">443</span> 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"null": parentHRI.getRegionNameAsString()) +<a name="line.461"></a> -<span class="sourceLineNo">462</span> " failed due to split switch off"));<a name="line.462"></a> -<span class="sourceLineNo">463</span> return false;<a name="line.463"></a> -<span class="sourceLineNo">464</span> }<a name="line.464"></a> -<span class="sourceLineNo">465</span><a name="line.465"></a> -<span class="sourceLineNo">466</span> // set node state as SPLITTING<a name="line.466"></a> -<span class="sourceLineNo">467</span> node.setState(State.SPLITTING);<a name="line.467"></a> -<span class="sourceLineNo">468</span><a name="line.468"></a> -<span class="sourceLineNo">469</span> return true;<a name="line.469"></a> -<span class="sourceLineNo">470</span> }<a name="line.470"></a> -<span class="sourceLineNo">471</span><a name="line.471"></a> -<span class="sourceLineNo">472</span> /**<a name="line.472"></a> -<span class="sourceLineNo">473</span> * Action before splitting region in a table.<a name="line.473"></a> -<span class="sourceLineNo">474</span> * @param env MasterProcedureEnv<a name="line.474"></a> -<span class="sourceLineNo">475</span> * @throws IOException<a name="line.475"></a> -<span class="sourceLineNo">476</span> * @throws InterruptedException<a name="line.476"></a> -<span class="sourceLineNo">477</span> */<a name="line.477"></a> -<span class="sourceLineNo">478</span> private void preSplitRegion(final MasterProcedureEnv env)<a name="line.478"></a> -<span class="sourceLineNo">479</span> throws IOException, InterruptedException {<a name="line.479"></a> -<span class="sourceLineNo">480</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.480"></a> -<span class="sourceLineNo">481</span> if (cpHost != null) {<a name="line.481"></a> -<span class="sourceLineNo">482</span> cpHost.preSplitRegionAction(getTableName(), getSplitRow(), getUser());<a name="line.482"></a> -<span class="sourceLineNo">483</span> }<a name="line.483"></a> -<span class="sourceLineNo">484</span><a name="line.484"></a> -<span class="sourceLineNo">485</span> // TODO: Clean up split and merge. 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class="sourceLineNo">496</span> /**<a name="line.496"></a> -<span class="sourceLineNo">497</span> * Action after rollback a split table region action.<a name="line.497"></a> -<span class="sourceLineNo">498</span> * @param env MasterProcedureEnv<a name="line.498"></a> -<span class="sourceLineNo">499</span> * @throws IOException<a name="line.499"></a> -<span class="sourceLineNo">500</span> */<a name="line.500"></a> -<span class="sourceLineNo">501</span> private void postRollBackSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.501"></a> -<span class="sourceLineNo">502</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.502"></a> -<span class="sourceLineNo">503</span> if (cpHost != null) {<a name="line.503"></a> -<span class="sourceLineNo">504</span> cpHost.postRollBackSplitRegionAction(getUser());<a name="line.504"></a> -<span class="sourceLineNo">505</span> }<a name="line.505"></a> -<span class="sourceLineNo">506</span> }<a 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class="sourceLineNo">517</span> final AssignProcedure[] procs = new AssignProcedure[regionReplication];<a name="line.517"></a> -<span class="sourceLineNo">518</span> for (int i = 0; i < regionReplication; ++i) {<a name="line.518"></a> -<span class="sourceLineNo">519</span> final RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(getParentRegion(), i);<a name="line.519"></a> -<span class="sourceLineNo">520</span> procs[i] = env.getAssignmentManager().createAssignProcedure(hri, serverName);<a name="line.520"></a> -<span class="sourceLineNo">521</span> }<a name="line.521"></a> -<span class="sourceLineNo">522</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<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> * Create daughter regions<a 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class="sourceLineNo">545</span> assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.545"></a> -<span class="sourceLineNo">546</span> new Path(tabledir, daughter_1_RI.getEncodedName()));<a name="line.546"></a> -<span class="sourceLineNo">547</span><a name="line.547"></a> -<span class="sourceLineNo">548</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.548"></a> -<span class="sourceLineNo">549</span> regionFs.getSplitsDir(daughter_2_RI));<a name="line.549"></a> -<span class="sourceLineNo">550</span> regionFs.commitDaughterRegion(daughter_2_RI);<a name="line.550"></a> -<span class="sourceLineNo">551</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.551"></a> -<span class="sourceLineNo">552</span> new Path(tabledir, daughter_2_RI.getEncodedName()));<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> * Create Split directory<a name="line.556"></a> -<span class="sourceLineNo">557</span> * @param env MasterProcedureEnv<a name="line.557"></a> -<span class="sourceLineNo">558</span> * @throws IOException<a name="line.558"></a> -<span class="sourceLineNo">559</span> */<a name="line.559"></a> -<span class="sourceLineNo">560</span> private Pair<Integer, Integer> splitStoreFiles(final MasterProcedureEnv env,<a name="line.560"></a> -<span class="sourceLineNo">561</span> final HRegionFileSystem regionFs) throws IOException {<a name="line.561"></a> -<span class="sourceLineNo">562</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.562"></a> -<span class="sourceLineNo">563</span> final Configuration conf = env.getMasterConfiguration();<a name="line.563"></a> -<span class="sourceLineNo">564</span> // The following code sets up a thread pool executor with 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class="sourceLineNo">591</span> files.put(family, filteredSfis);<a name="line.591"></a> -<span class="sourceLineNo">592</span> }<a name="line.592"></a> -<span class="sourceLineNo">593</span> filteredSfis.add(sfi);<a name="line.593"></a> -<span class="sourceLineNo">594</span> nbFiles++;<a name="line.594"></a> -<span class="sourceLineNo">595</span> }<a name="line.595"></a> -<span class="sourceLineNo">596</span> }<a name="line.596"></a> -<span class="sourceLineNo">597</span> if (nbFiles == 0) {<a name="line.597"></a> -<span class="sourceLineNo">598</span> // no file needs to be splitted.<a name="line.598"></a> -<span class="sourceLineNo">599</span> return new Pair<Integer, Integer>(0,0);<a name="line.599"></a> -<span class="sourceLineNo">600</span> }<a name="line.600"></a> -<span class="sourceLineNo">601</span> // Max #threads is the smaller of the number of storefiles or the default max determined above.<a name="line.601"></a> -<span class="sourceLineNo">602</span> int maxThreads = 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ArrayList<Future<Pair<Path,Path>>>(nbFiles);<a name="line.610"></a> -<span class="sourceLineNo">611</span><a name="line.611"></a> -<span class="sourceLineNo">612</span> TableDescriptor htd = env.getMasterServices().getTableDescriptors().get(getTableName());<a name="line.612"></a> -<span class="sourceLineNo">613</span> // Split each store file.<a name="line.613"></a> -<span class="sourceLineNo">614</span> for (Map.Entry<String, Collection<StoreFileInfo>>e: files.entrySet()) {<a name="line.614"></a> -<span class="sourceLineNo">615</span> byte [] familyName = Bytes.toBytes(e.getKey());<a name="line.615"></a> -<span class="sourceLineNo">616</span> final ColumnFamilyDescriptor hcd = htd.getColumnFamily(familyName);<a name="line.616"></a> -<span class="sourceLineNo">617</span> final Collection<StoreFileInfo> storeFiles = e.getValue();<a name="line.617"></a> -<span class="sourceLineNo">618</span> if (storeFiles != null && storeFiles.size() > 0) {<a name="line.618"></a> -<span 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getParentRegion().getShortNameToLog());<a name="line.698"></a> -<span class="sourceLineNo">699</span> }<a name="line.699"></a> -<span class="sourceLineNo">700</span> return new Pair<Path,Path>(path_first, path_second);<a name="line.700"></a> -<span class="sourceLineNo">701</span> }<a name="line.701"></a> -<span class="sourceLineNo">702</span><a name="line.702"></a> -<span class="sourceLineNo">703</span> /**<a name="line.703"></a> -<span class="sourceLineNo">704</span> * Utility class used to do the file splitting / reference writing<a name="line.704"></a> -<span class="sourceLineNo">705</span> * in parallel instead of sequentially.<a name="line.705"></a> -<span class="sourceLineNo">706</span> */<a name="line.706"></a> -<span class="sourceLineNo">707</span> private class StoreFileSplitter implements Callable<Pair<Path,Path>> {<a name="line.707"></a> -<span class="sourceLineNo">708</span> private final HRegionFileSystem regionFs;<a name="line.708"></a> -<span 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class="sourceLineNo">753</span> /**<a name="line.753"></a> -<span class="sourceLineNo">754</span> * Add daughter regions to META<a name="line.754"></a> -<span class="sourceLineNo">755</span> * @param env MasterProcedureEnv<a name="line.755"></a> -<span class="sourceLineNo">756</span> * @throws IOException<a name="line.756"></a> -<span class="sourceLineNo">757</span> */<a name="line.757"></a> -<span class="sourceLineNo">758</span> private void updateMetaForDaughterRegions(final MasterProcedureEnv env) throws IOException {<a name="line.758"></a> -<span class="sourceLineNo">759</span> env.getAssignmentManager().markRegionAsSplit(getParentRegion(), getParentRegionServerName(env),<a name="line.759"></a> -<span class="sourceLineNo">760</span> daughter_1_RI, daughter_2_RI);<a name="line.760"></a> -<span class="sourceLineNo">761</span> }<a name="line.761"></a> -<span class="sourceLineNo">762</span><a name="line.762"></a> -<span class="sourceLineNo">763</span> /**<a name="line.763"></a> -<span 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name="line.774"></a> -<span class="sourceLineNo">775</span> /**<a name="line.775"></a> -<span class="sourceLineNo">776</span> * Post split region actions<a name="line.776"></a> -<span class="sourceLineNo">777</span> * @param env MasterProcedureEnv<a name="line.777"></a> -<span class="sourceLineNo">778</span> **/<a name="line.778"></a> -<span class="sourceLineNo">779</span> private void postSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.779"></a> -<span class="sourceLineNo">780</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.780"></a> -<span class="sourceLineNo">781</span> if (cpHost != null) {<a name="line.781"></a> -<span class="sourceLineNo">782</span> cpHost.postCompletedSplitRegionAction(daughter_1_RI, daughter_2_RI, getUser());<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 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procedure could be restarted from a different machine. 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This can be improved by changing rollback() to support sub-procedures.<a name="line.283"></a> +<span class="sourceLineNo">284</span> * See HBASE-19851 for details.<a name="line.284"></a> +<span class="sourceLineNo">285</span> */<a name="line.285"></a> +<span class="sourceLineNo">286</span> @Override<a name="line.286"></a> +<span class="sourceLineNo">287</span> protected void rollbackState(final MasterProcedureEnv env, final SplitTableRegionState state)<a name="line.287"></a> +<span class="sourceLineNo">288</span> throws IOException, InterruptedException {<a name="line.288"></a> +<span class="sourceLineNo">289</span> if (isTraceEnabled()) {<a name="line.289"></a> +<span class="sourceLineNo">290</span> LOG.trace(this + " rollback state=" + state);<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> try {<a name="line.293"></a> +<span class="sourceLineNo">294</span> switch (state) {<a name="line.294"></a> +<span class="sourceLineNo">295</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.295"></a> +<span class="sourceLineNo">296</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.296"></a> +<span class="sourceLineNo">297</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.297"></a> +<span class="sourceLineNo">298</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.298"></a> +<span class="sourceLineNo">299</span> // PONR<a name="line.299"></a> +<span class="sourceLineNo">300</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.300"></a> +<span class="sourceLineNo">301</span> case SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_META:<a name="line.301"></a> +<span class="sourceLineNo">302</span> break;<a name="line.302"></a> +<span class="sourceLineNo">303</span> case SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS:<a name="line.303"></a> +<span class="sourceLineNo">304</span> // Doing nothing, as re-open parent region would clean up daughter region directories.<a name="line.304"></a> +<span class="sourceLineNo">305</span> break;<a name="line.305"></a> +<span class="sourceLineNo">306</span> case SPLIT_TABLE_REGION_CLOSE_PARENT_REGION:<a name="line.306"></a> +<span class="sourceLineNo">307</span> openParentRegion(env);<a name="line.307"></a> +<span class="sourceLineNo">308</span> break;<a name="line.308"></a> +<span class="sourceLineNo">309</span> case SPLIT_TABLE_REGION_PRE_OPERATION:<a name="line.309"></a> +<span class="sourceLineNo">310</span> postRollBackSplitRegion(env);<a name="line.310"></a> +<span class="sourceLineNo">311</span> break;<a name="line.311"></a> +<span class="sourceLineNo">312</span> case SPLIT_TABLE_REGION_PREPARE:<a name="line.312"></a> +<span class="sourceLineNo">313</span> break; // nothing to do<a name="line.313"></a> +<span class="sourceLineNo">314</span> default:<a name="line.314"></a> +<span class="sourceLineNo">315</span> throw new UnsupportedOperationException(this + " unhandled state=" + state);<a name="line.315"></a> +<span class="sourceLineNo">316</span> }<a name="line.316"></a> +<span class="sourceLineNo">317</span> } catch (IOException e) {<a name="line.317"></a> +<span class="sourceLineNo">318</span> // This will be retried. Unless there is a bug in the code,<a name="line.318"></a> +<span class="sourceLineNo">319</span> // this should be just a "temporary error" (e.g. network down)<a name="line.319"></a> +<span class="sourceLineNo">320</span> LOG.warn("pid=" + getProcId() + " failed rollback attempt step " + state +<a name="line.320"></a> +<span class="sourceLineNo">321</span> " for splitting the region "<a name="line.321"></a> +<span class="sourceLineNo">322</span> + getParentRegion().getEncodedName() + " in table " + getTableName(), e);<a name="line.322"></a> +<span class="sourceLineNo">323</span> throw e;<a name="line.323"></a> +<span class="sourceLineNo">324</span> }<a name="line.324"></a> +<span class="sourceLineNo">325</span> }<a name="line.325"></a> +<span class="sourceLineNo">326</span><a name="line.326"></a> +<span class="sourceLineNo">327</span> /*<a name="line.327"></a> +<span class="sourceLineNo">328</span> * Check whether we are in the state that can be rollback<a name="line.328"></a> +<span class="sourceLineNo">329</span> */<a name="line.329"></a> +<span class="sourceLineNo">330</span> @Override<a name="line.330"></a> +<span class="sourceLineNo">331</span> protected boolean isRollbackSupported(final SplitTableRegionState state) {<a name="line.331"></a> +<span class="sourceLineNo">332</span> switch (state) {<a name="line.332"></a> +<span class="sourceLineNo">333</span> case SPLIT_TABLE_REGION_POST_OPERATION:<a name="line.333"></a> +<span class="sourceLineNo">334</span> case SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS:<a name="line.334"></a> +<span class="sourceLineNo">335</span> case SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_META:<a name="line.335"></a> +<span class="sourceLineNo">336</span> case SPLIT_TABLE_REGION_UPDATE_META:<a name="line.336"></a> +<span class="sourceLineNo">337</span> // It is not safe to rollback if we reach to these states.<a name="line.337"></a> +<span class="sourceLineNo">338</span> return false;<a name="line.338"></a> +<span class="sourceLineNo">339</span> default:<a name="line.339"></a> +<span class="sourceLineNo">340</span> break;<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span> return true;<a name="line.342"></a> +<span class="sourceLineNo">343</span> }<a name="line.343"></a> +<span class="sourceLineNo">344</span><a name="line.344"></a> +<span class="sourceLineNo">345</span> @Override<a name="line.345"></a> +<span class="sourceLineNo">346</span> protected SplitTableRegionState getState(final int stateId) {<a name="line.346"></a> +<span class="sourceLineNo">347</span> return SplitTableRegionState.forNumber(stateId);<a name="line.347"></a> +<span class="sourceLineNo">348</span> }<a name="line.348"></a> +<span class="sourceLineNo">349</span><a name="line.349"></a> +<span class="sourceLineNo">350</span> @Override<a name="line.350"></a> +<span class="sourceLineNo">351</span> protected int getStateId(final SplitTableRegionState state) {<a name="line.351"></a> +<span class="sourceLineNo">352</span> return state.getNumber();<a name="line.352"></a> +<span class="sourceLineNo">353</span> }<a name="line.353"></a> +<span class="sourceLineNo">354</span><a name="line.354"></a> +<span class="sourceLineNo">355</span> @Override<a name="line.355"></a> +<span class="sourceLineNo">356</span> protected SplitTableRegionState getInitialState() {<a name="line.356"></a> +<span class="sourceLineNo">357</span> return SplitTableRegionState.SPLIT_TABLE_REGION_PREPARE;<a name="line.357"></a> +<span class="sourceLineNo">358</span> }<a name="line.358"></a> +<span class="sourceLineNo">359</span><a name="line.359"></a> +<span class="sourceLineNo">360</span> @Override<a name="line.360"></a> +<span class="sourceLineNo">361</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.361"></a> +<span class="sourceLineNo">362</span> throws IOException {<a name="line.362"></a> +<span class="sourceLineNo">363</span> super.serializeStateData(serializer);<a name="line.363"></a> +<span class="sourceLineNo">364</span><a name="line.364"></a> +<span class="sourceLineNo">365</span> final MasterProcedureProtos.SplitTableRegionStateData.Builder splitTableRegionMsg =<a name="line.365"></a> +<span class="sourceLineNo">366</span> MasterProcedureProtos.SplitTableRegionStateData.newBuilder()<a name="line.366"></a> +<span class="sourceLineNo">367</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.367"></a> +<span class="sourceLineNo">368</span> .setParentRegionInfo(ProtobufUtil.toRegionInfo(getRegion()))<a name="line.368"></a> +<span class="sourceLineNo">369</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_1_RI))<a name="line.369"></a> +<span class="sourceLineNo">370</span> .addChildRegionInfo(ProtobufUtil.toRegionInfo(daughter_2_RI));<a name="line.370"></a> +<span class="sourceLineNo">371</span> serializer.serialize(splitTableRegionMsg.build());<a name="line.371"></a> +<span class="sourceLineNo">372</span> }<a name="line.372"></a> +<span class="sourceLineNo">373</span><a name="line.373"></a> +<span class="sourceLineNo">374</span> @Override<a name="line.374"></a> +<span class="sourceLineNo">375</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.375"></a> +<span class="sourceLineNo">376</span> throws IOException {<a name="line.376"></a> +<span class="sourceLineNo">377</span> super.deserializeStateData(serializer);<a name="line.377"></a> +<span class="sourceLineNo">378</span><a name="line.378"></a> +<span class="sourceLineNo">379</span> final MasterProcedureProtos.SplitTableRegionStateData splitTableRegionsMsg =<a name="line.379"></a> +<span class="sourceLineNo">380</span> serializer.deserialize(MasterProcedureProtos.SplitTableRegionStateData.class);<a name="line.380"></a> +<span class="sourceLineNo">381</span> setUser(MasterProcedureUtil.toUserInfo(splitTableRegionsMsg.getUserInfo()));<a name="line.381"></a> +<span class="sourceLineNo">382</span> setRegion(ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getParentRegionInfo()));<a name="line.382"></a> +<span class="sourceLineNo">383</span> assert(splitTableRegionsMsg.getChildRegionInfoCount() == 2);<a name="line.383"></a> +<span class="sourceLineNo">384</span> daughter_1_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(0));<a name="line.384"></a> +<span class="sourceLineNo">385</span> daughter_2_RI = ProtobufUtil.toRegionInfo(splitTableRegionsMsg.getChildRegionInfo(1));<a name="line.385"></a> +<span class="sourceLineNo">386</span> }<a name="line.386"></a> +<span class="sourceLineNo">387</span><a name="line.387"></a> +<span class="sourceLineNo">388</span> @Override<a name="line.388"></a> +<span class="sourceLineNo">389</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.389"></a> +<span class="sourceLineNo">390</span> sb.append(getClass().getSimpleName());<a name="line.390"></a> +<span class="sourceLineNo">391</span> sb.append(" table=");<a name="line.391"></a> +<span class="sourceLineNo">392</span> sb.append(getTableName());<a name="line.392"></a> +<span class="sourceLineNo">393</span> sb.append(", parent=");<a name="line.393"></a> +<span class="sourceLineNo">394</span> sb.append(getParentRegion().getShortNameToLog());<a name="line.394"></a> +<span class="sourceLineNo">395</span> sb.append(", daughterA=");<a name="line.395"></a> +<span class="sourceLineNo">396</span> sb.append(daughter_1_RI.getShortNameToLog());<a name="line.396"></a> +<span class="sourceLineNo">397</span> sb.append(", daughterB=");<a name="line.397"></a> +<span class="sourceLineNo">398</span> sb.append(daughter_2_RI.getShortNameToLog());<a name="line.398"></a> +<span class="sourceLineNo">399</span> }<a name="line.399"></a> +<span class="sourceLineNo">400</span><a name="line.400"></a> +<span class="sourceLineNo">401</span> private RegionInfo getParentRegion() {<a name="line.401"></a> +<span class="sourceLineNo">402</span> return getRegion();<a name="line.402"></a> +<span class="sourceLineNo">403</span> }<a name="line.403"></a> +<span class="sourceLineNo">404</span><a name="line.404"></a> +<span class="sourceLineNo">405</span> @Override<a name="line.405"></a> +<span class="sourceLineNo">406</span> public TableOperationType getTableOperationType() {<a name="line.406"></a> +<span class="sourceLineNo">407</span> return TableOperationType.REGION_SPLIT;<a name="line.407"></a> +<span class="sourceLineNo">408</span> }<a name="line.408"></a> +<span class="sourceLineNo">409</span><a name="line.409"></a> +<span class="sourceLineNo">410</span> @Override<a name="line.410"></a> +<span class="sourceLineNo">411</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.411"></a> +<span class="sourceLineNo">412</span> return env.getAssignmentManager().getAssignmentManagerMetrics().getSplitProcMetrics();<a name="line.412"></a> +<span class="sourceLineNo">413</span> }<a name="line.413"></a> +<span class="sourceLineNo">414</span><a name="line.414"></a> +<span class="sourceLineNo">415</span> private byte[] getSplitRow() {<a name="line.415"></a> +<span class="sourceLineNo">416</span> return daughter_2_RI.getStartKey();<a name="line.416"></a> +<span class="sourceLineNo">417</span> }<a name="line.417"></a> +<span class="sourceLineNo">418</span><a name="line.418"></a> +<span class="sourceLineNo">419</span> private static State [] EXPECTED_SPLIT_STATES = new State [] {State.OPEN, State.CLOSED};<a name="line.419"></a> +<span class="sourceLineNo">420</span> /**<a name="line.420"></a> +<span class="sourceLineNo">421</span> * Prepare to Split region.<a name="line.421"></a> +<span class="sourceLineNo">422</span> * @param env MasterProcedureEnv<a name="line.422"></a> +<span class="sourceLineNo">423</span> * @throws IOException<a name="line.423"></a> +<span class="sourceLineNo">424</span> */<a name="line.424"></a> +<span class="sourceLineNo">425</span> @VisibleForTesting<a name="line.425"></a> +<span class="sourceLineNo">426</span> public boolean prepareSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.426"></a> +<span class="sourceLineNo">427</span> // Check whether the region is splittable<a name="line.427"></a> +<span class="sourceLineNo">428</span> RegionStateNode node =<a name="line.428"></a> +<span class="sourceLineNo">429</span> env.getAssignmentManager().getRegionStates().getRegionStateNode(getParentRegion());<a name="line.429"></a> +<span class="sourceLineNo">430</span><a name="line.430"></a> +<span class="sourceLineNo">431</span> if (node == null) {<a name="line.431"></a> +<span class="sourceLineNo">432</span> throw new UnknownRegionException(getParentRegion().getRegionNameAsString());<a name="line.432"></a> +<span class="sourceLineNo">433</span> }<a name="line.433"></a> +<span class="sourceLineNo">434</span><a name="line.434"></a> +<span class="sourceLineNo">435</span> RegionInfo parentHRI = node.getRegionInfo();<a name="line.435"></a> +<span class="sourceLineNo">436</span> // Lookup the parent HRI state from the AM, which has the latest updated info.<a name="line.436"></a> +<span class="sourceLineNo">437</span> // Protect against the case where concurrent SPLIT requests came in and succeeded<a name="line.437"></a> +<span class="sourceLineNo">438</span> // just before us.<a name="line.438"></a> +<span class="sourceLineNo">439</span> if (node.isInState(State.SPLIT)) {<a name="line.439"></a> +<span class="sourceLineNo">440</span> LOG.info("Split of " + parentHRI + " skipped; state is already SPLIT");<a name="line.440"></a> +<span class="sourceLineNo">441</span> return false;<a name="line.441"></a> +<span class="sourceLineNo">442</span> }<a name="line.442"></a> +<span class="sourceLineNo">443</span> if (parentHRI.isSplit() || parentHRI.isOffline()) {<a name="line.443"></a> +<span class="sourceLineNo">444</span> LOG.info("Split of " + parentHRI + " skipped because offline/split.");<a name="line.444"></a> +<span class="sourceLineNo">445</span> return false;<a name="line.445"></a> +<span class="sourceLineNo">446</span> }<a name="line.446"></a> +<span class="sourceLineNo">447</span><a name="line.447"></a> +<span class="sourceLineNo">448</span> // expected parent to be online or closed<a name="line.448"></a> +<span class="sourceLineNo">449</span> if (!node.isInState(EXPECTED_SPLIT_STATES)) {<a name="line.449"></a> +<span class="sourceLineNo">450</span> // We may have SPLIT already?<a name="line.450"></a> +<span class="sourceLineNo">451</span> setFailure(new IOException("Split " + parentHRI.getRegionNameAsString() +<a name="line.451"></a> +<span class="sourceLineNo">452</span> " FAILED because state=" + node.getState() + "; expected " +<a name="line.452"></a> +<span class="sourceLineNo">453</span> Arrays.toString(EXPECTED_SPLIT_STATES)));<a name="line.453"></a> +<span class="sourceLineNo">454</span> return false;<a name="line.454"></a> +<span class="sourceLineNo">455</span> }<a name="line.455"></a> +<span class="sourceLineNo">456</span><a name="line.456"></a> +<span class="sourceLineNo">457</span> // Since we have the lock and the master is coordinating the operation<a name="line.457"></a> +<span class="sourceLineNo">458</span> // we are always able to split the region<a name="line.458"></a> +<span class="sourceLineNo">459</span> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.SPLIT)) {<a name="line.459"></a> +<span class="sourceLineNo">460</span> LOG.warn("pid=" + getProcId() + " split switch is off! skip split of " + parentHRI);<a name="line.460"></a> +<span class="sourceLineNo">461</span> setFailure(new IOException("Split region " +<a name="line.461"></a> +<span class="sourceLineNo">462</span> (parentHRI == null? "null": parentHRI.getRegionNameAsString()) +<a name="line.462"></a> +<span class="sourceLineNo">463</span> " failed due to split switch off"));<a name="line.463"></a> +<span class="sourceLineNo">464</span> return false;<a name="line.464"></a> +<span class="sourceLineNo">465</span> }<a name="line.465"></a> +<span class="sourceLineNo">466</span><a name="line.466"></a> +<span class="sourceLineNo">467</span> // set node state as SPLITTING<a name="line.467"></a> +<span class="sourceLineNo">468</span> node.setState(State.SPLITTING);<a name="line.468"></a> +<span class="sourceLineNo">469</span><a name="line.469"></a> +<span class="sourceLineNo">470</span> return true;<a name="line.470"></a> +<span class="sourceLineNo">471</span> }<a name="line.471"></a> +<span class="sourceLineNo">472</span><a name="line.472"></a> +<span class="sourceLineNo">473</span> /**<a name="line.473"></a> +<span class="sourceLineNo">474</span> * Action before splitting region in a table.<a name="line.474"></a> +<span class="sourceLineNo">475</span> * @param env MasterProcedureEnv<a name="line.475"></a> +<span class="sourceLineNo">476</span> * @throws IOException<a name="line.476"></a> +<span class="sourceLineNo">477</span> * @throws InterruptedException<a name="line.477"></a> +<span class="sourceLineNo">478</span> */<a name="line.478"></a> +<span class="sourceLineNo">479</span> private void preSplitRegion(final MasterProcedureEnv env)<a name="line.479"></a> +<span class="sourceLineNo">480</span> throws IOException, InterruptedException {<a name="line.480"></a> +<span class="sourceLineNo">481</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.481"></a> +<span class="sourceLineNo">482</span> if (cpHost != null) {<a name="line.482"></a> +<span class="sourceLineNo">483</span> cpHost.preSplitRegionAction(getTableName(), getSplitRow(), getUser());<a name="line.483"></a> +<span class="sourceLineNo">484</span> }<a name="line.484"></a> +<span class="sourceLineNo">485</span><a name="line.485"></a> +<span class="sourceLineNo">486</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.486"></a> +<span class="sourceLineNo">487</span> // Notify QuotaManager and RegionNormalizer<a name="line.487"></a> +<span class="sourceLineNo">488</span> try {<a name="line.488"></a> +<span class="sourceLineNo">489</span> env.getMasterServices().getMasterQuotaManager().onRegionSplit(this.getParentRegion());<a name="line.489"></a> +<span class="sourceLineNo">490</span> } catch (QuotaExceededException e) {<a name="line.490"></a> +<span class="sourceLineNo">491</span> env.getAssignmentManager().getRegionNormalizer().planSkipped(this.getParentRegion(),<a name="line.491"></a> +<span class="sourceLineNo">492</span> NormalizationPlan.PlanType.SPLIT);<a name="line.492"></a> +<span class="sourceLineNo">493</span> throw e;<a name="line.493"></a> +<span class="sourceLineNo">494</span> }<a name="line.494"></a> +<span class="sourceLineNo">495</span> }<a name="line.495"></a> +<span class="sourceLineNo">496</span><a name="line.496"></a> +<span class="sourceLineNo">497</span> /**<a name="line.497"></a> +<span class="sourceLineNo">498</span> * Action after rollback a split table region action.<a name="line.498"></a> +<span class="sourceLineNo">499</span> * @param env MasterProcedureEnv<a name="line.499"></a> +<span class="sourceLineNo">500</span> * @throws IOException<a name="line.500"></a> +<span class="sourceLineNo">501</span> */<a name="line.501"></a> +<span class="sourceLineNo">502</span> private void postRollBackSplitRegion(final MasterProcedureEnv env) throws IOException {<a name="line.502"></a> +<span class="sourceLineNo">503</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.503"></a> +<span class="sourceLineNo">504</span> if (cpHost != null) {<a name="line.504"></a> +<span class="sourceLineNo">505</span> cpHost.postRollBackSplitRegionAction(getUser());<a name="line.505"></a> +<span class="sourceLineNo">506</span> }<a name="line.506"></a> +<span class="sourceLineNo">507</span> }<a name="line.507"></a> +<span class="sourceLineNo">508</span><a name="line.508"></a> +<span class="sourceLineNo">509</span> /**<a name="line.509"></a> +<span class="sourceLineNo">510</span> * Rollback close parent region<a name="line.510"></a> +<span class="sourceLineNo">511</span> * @param env MasterProcedureEnv<a name="line.511"></a> +<span class="sourceLineNo">512</span> **/<a name="line.512"></a> +<span class="sourceLineNo">513</span> private void openParentRegion(final MasterProcedureEnv env) throws IOException {<a name="line.513"></a> +<span class="sourceLineNo">514</span> // Check whether the region is closed; if so, open it in the same server<a name="line.514"></a> +<span class="sourceLineNo">515</span> final int regionReplication = getRegionReplication(env);<a name="line.515"></a> +<span class="sourceLineNo">516</span> final ServerName serverName = getParentRegionServerName(env);<a name="line.516"></a> +<span class="sourceLineNo">517</span><a name="line.517"></a> +<span class="sourceLineNo">518</span> final AssignProcedure[] procs = new AssignProcedure[regionReplication];<a name="line.518"></a> +<span class="sourceLineNo">519</span> for (int i = 0; i < regionReplication; ++i) {<a name="line.519"></a> +<span class="sourceLineNo">520</span> final RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(getParentRegion(), i);<a name="line.520"></a> +<span class="sourceLineNo">521</span> procs[i] = env.getAssignmentManager().createAssignProcedure(hri, serverName);<a name="line.521"></a> +<span class="sourceLineNo">522</span> }<a name="line.522"></a> +<span class="sourceLineNo">523</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<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> /**<a name="line.526"></a> +<span class="sourceLineNo">527</span> * Create daughter regions<a name="line.527"></a> +<span class="sourceLineNo">528</span> * @param env MasterProcedureEnv<a name="line.528"></a> +<span class="sourceLineNo">529</span> * @throws IOException<a name="line.529"></a> +<span class="sourceLineNo">530</span> */<a name="line.530"></a> +<span class="sourceLineNo">531</span> @VisibleForTesting<a name="line.531"></a> +<span class="sourceLineNo">532</span> public void createDaughterRegions(final MasterProcedureEnv env) throws IOException {<a name="line.532"></a> +<span class="sourceLineNo">533</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.533"></a> +<span class="sourceLineNo">534</span> final Path tabledir = FSUtils.getTableDir(mfs.getRootDir(), getTableName());<a name="line.534"></a> +<span class="sourceLineNo">535</span> final FileSystem fs = mfs.getFileSystem();<a name="line.535"></a> +<span class="sourceLineNo">536</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.536"></a> +<span class="sourceLineNo">537</span> env.getMasterConfiguration(), fs, tabledir, getParentRegion(), false);<a name="line.537"></a> +<span class="sourceLineNo">538</span> regionFs.createSplitsDir();<a name="line.538"></a> +<span class="sourceLineNo">539</span><a name="line.539"></a> +<span class="sourceLineNo">540</span> Pair<Integer, Integer> expectedReferences = splitStoreFiles(env, regionFs);<a name="line.540"></a> +<span class="sourceLineNo">541</span><a name="line.541"></a> +<span class="sourceLineNo">542</span> assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.542"></a> +<span class="sourceLineNo">543</span> regionFs.getSplitsDir(daughter_1_RI));<a name="line.543"></a> +<span class="sourceLineNo">544</span> //Move the files from the temporary .splits to the final /table/region directory<a name="line.544"></a> +<span class="sourceLineNo">545</span> regionFs.commitDaughterRegion(daughter_1_RI);<a name="line.545"></a> +<span class="sourceLineNo">546</span> assertReferenceFileCount(fs, expectedReferences.getFirst(),<a name="line.546"></a> +<span class="sourceLineNo">547</span> new Path(tabledir, daughter_1_RI.getEncodedName()));<a name="line.547"></a> +<span class="sourceLineNo">548</span><a name="line.548"></a> +<span class="sourceLineNo">549</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.549"></a> +<span class="sourceLineNo">550</span> regionFs.getSplitsDir(daughter_2_RI));<a name="line.550"></a> +<span class="sourceLineNo">551</span> regionFs.commitDaughterRegion(daughter_2_RI);<a name="line.551"></a> +<span class="sourceLineNo">552</span> assertReferenceFileCount(fs, expectedReferences.getSecond(),<a name="line.552"></a> +<span class="sourceLineNo">553</span> new Path(tabledir, daughter_2_RI.getEncodedName()));<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> * Create Split directory<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> private Pair<Integer, Integer> splitStoreFiles(final MasterProcedureEnv env,<a name="line.561"></a> +<span class="sourceLineNo">562</span> final HRegionFileSystem regionFs) throws IOException {<a name="line.562"></a> +<span class="sourceLineNo">563</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.563"></a> +<span class="sourceLineNo">564</span> final Configuration conf = env.getMasterConfiguration();<a name="line.564"></a> +<span class="sourceLineNo">565</span> // The following code sets up a thread pool executor with as many slots as<a name="line.565"></a> +<span class="sourceLineNo">566</span> // there's files to split. It then fires up everything, waits for<a name="line.566"></a> +<span class="sourceLineNo">567</span> // completion and finally checks for any exception<a name="line.567"></a> +<span class="sourceLineNo">568</span> //<a name="line.568"></a> +<span class="sourceLineNo">569</span> // Note: splitStoreFiles creates daughter region dirs under the parent splits dir<a name="line.569"></a> +<span class="sourceLineNo">570</span> // Nothing to unroll here if failure -- re-run createSplitsDir will<a name="line.570"></a> +<span class="sourceLineNo">571</span> // clean this up.<a name="line.571"></a> +<span class="sourceLineNo">572</span> int nbFiles = 0;<a name="line.572"></a> +<span class="sourceLineNo">573</span> final Map<String, Collection<StoreFileInfo>> files =<a name="line.573"></a> +<span class="sourceLineNo">574</span> new HashMap<String, Collection<StoreFileInfo>>(regionFs.getFamilies().size());<a name="line.574"></a> +<span class="sourceLineNo">575</span> for (String family: regionFs.getFamilies()) {<a name="line.575"></a> +<span class="sourceLineNo">576</span> Collection<StoreFileInfo> sfis = regionFs.getStoreFiles(family);<a name="line.576"></a> +<span class="sourceLineNo">577</span> if (sfis == null) continue;<a name="line.577"></a> +<span class="sourceLineNo">578</span> Collection<StoreFileInfo> filteredSfis = null;<a name="line.578"></a> +<span class="sourceLineNo">579</span> for (StoreFileInfo sfi: sfis) {<a name="line.579"></a> +<span class="sourceLineNo">580</span> // Filter. There is a lag cleaning up compacted reference files. They get cleared<a name="line.580"></a> +<span class="sourceLineNo">581</span> // after a delay in case outstanding Scanners still have references. Because of this,<a name="line.581"></a> +<span class="sourceLineNo">582</span> // the listing of the Store content may have straggler reference files. Skip these.<a name="line.582"></a> +<span class="sourceLineNo">583</span> // It should be safe to skip references at this point because we checked above with<a name="line.583"></a> +<span class="sourceLineNo">584</span> // the region if it thinks it is splittable and if we are here, it thinks it is<a name="line.584"></a> +<span class="sourceLineNo">585</span> // splitable.<a name="line.585"></a> +<span class="sourceLineNo">586</span> if (sfi.isReference()) {<a name="line.586"></a> +<span class="sourceLineNo">587</span> LOG.info("Skipping split of " + sfi + "; presuming ready for archiving.");<a name="line.587"></a> +<span class="sourceLineNo">588</span> continue;<a name="line.588"></a> +<span class="sourceLineNo">589<
<TRUNCATED>
