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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/11/18 14:51:21 UTC
[5/9] hbase-site git commit: Published site at
f555258e7abab1337ee4d39aaa1dafff72be287b.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/fa03a052/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 adf4e7a..a0da8a5 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
@@ -488,324 +488,331 @@
<span class="sourceLineNo">480</span> * Prepare merge and do some check<a name="line.480"></a>
<span class="sourceLineNo">481</span> */<a name="line.481"></a>
<span class="sourceLineNo">482</span> private boolean prepareMergeRegion(final MasterProcedureEnv env) throws IOException {<a name="line.482"></a>
-<span class="sourceLineNo">483</span> // Note: the following logic assumes that we only have 2 regions to merge. In the future,<a name="line.483"></a>
-<span class="sourceLineNo">484</span> // if we want to extend to more than 2 regions, the code needs to be modified a little bit.<a name="line.484"></a>
-<span class="sourceLineNo">485</span> CatalogJanitor catalogJanitor = env.getMasterServices().getCatalogJanitor();<a name="line.485"></a>
-<span class="sourceLineNo">486</span> boolean regionAHasMergeQualifier = !catalogJanitor.cleanMergeQualifier(regionsToMerge[0]);<a name="line.486"></a>
-<span class="sourceLineNo">487</span> if (regionAHasMergeQualifier<a name="line.487"></a>
-<span class="sourceLineNo">488</span> || !catalogJanitor.cleanMergeQualifier(regionsToMerge[1])) {<a name="line.488"></a>
-<span class="sourceLineNo">489</span> String msg = "Skip merging regions " + RegionInfo.getShortNameToLog(regionsToMerge) +<a name="line.489"></a>
-<span class="sourceLineNo">490</span> ", because region "<a name="line.490"></a>
-<span class="sourceLineNo">491</span> + (regionAHasMergeQualifier ? regionsToMerge[0].getEncodedName() : regionsToMerge[1]<a name="line.491"></a>
-<span class="sourceLineNo">492</span> .getEncodedName()) + " has merge qualifier";<a name="line.492"></a>
-<span class="sourceLineNo">493</span> LOG.warn(msg);<a name="line.493"></a>
-<span class="sourceLineNo">494</span> throw new MergeRegionException(msg);<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> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.497"></a>
-<span class="sourceLineNo">498</span> RegionState regionStateA = regionStates.getRegionState(regionsToMerge[0].getEncodedName());<a name="line.498"></a>
-<span class="sourceLineNo">499</span> RegionState regionStateB = regionStates.getRegionState(regionsToMerge[1].getEncodedName());<a name="line.499"></a>
-<span class="sourceLineNo">500</span> if (regionStateA == null || regionStateB == null) {<a name="line.500"></a>
-<span class="sourceLineNo">501</span> throw new UnknownRegionException(<a name="line.501"></a>
-<span class="sourceLineNo">502</span> regionStateA == null ?<a name="line.502"></a>
-<span class="sourceLineNo">503</span> regionsToMerge[0].getEncodedName() : regionsToMerge[1].getEncodedName());<a name="line.503"></a>
-<span class="sourceLineNo">504</span> }<a name="line.504"></a>
-<span class="sourceLineNo">505</span><a name="line.505"></a>
-<span class="sourceLineNo">506</span> if (!regionStateA.isOpened() || !regionStateB.isOpened()) {<a name="line.506"></a>
-<span class="sourceLineNo">507</span> throw new MergeRegionException(<a name="line.507"></a>
-<span class="sourceLineNo">508</span> "Unable to merge regions that are not online " + regionStateA + ", " + regionStateB);<a name="line.508"></a>
-<span class="sourceLineNo">509</span> }<a name="line.509"></a>
-<span class="sourceLineNo">510</span><a name="line.510"></a>
-<span class="sourceLineNo">511</span> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.MERGE)) {<a name="line.511"></a>
-<span class="sourceLineNo">512</span> String regionsStr = Arrays.deepToString(regionsToMerge);<a name="line.512"></a>
-<span class="sourceLineNo">513</span> LOG.warn("merge switch is off! skip merge of " + regionsStr);<a name="line.513"></a>
-<span class="sourceLineNo">514</span> super.setFailure(getClass().getSimpleName(),<a name="line.514"></a>
-<span class="sourceLineNo">515</span> new IOException("Merge of " + regionsStr + " failed because merge switch is off"));<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> // Ask the remote regionserver if regions are mergeable. If we get an IOE, report it<a name="line.519"></a>
-<span class="sourceLineNo">520</span> // along with the failure, so we can see why regions are not mergeable at this time.<a name="line.520"></a>
-<span class="sourceLineNo">521</span> IOException mergeableCheckIOE = null;<a name="line.521"></a>
-<span class="sourceLineNo">522</span> boolean mergeable = false;<a name="line.522"></a>
-<span class="sourceLineNo">523</span> RegionState current = regionStateA;<a name="line.523"></a>
-<span class="sourceLineNo">524</span> try {<a name="line.524"></a>
-<span class="sourceLineNo">525</span> mergeable = isMergeable(env, current);<a name="line.525"></a>
-<span class="sourceLineNo">526</span> } catch (IOException e) {<a name="line.526"></a>
-<span class="sourceLineNo">527</span> mergeableCheckIOE = e;<a name="line.527"></a>
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-<span class="sourceLineNo">529</span> if (mergeable && mergeableCheckIOE == null) {<a name="line.529"></a>
-<span class="sourceLineNo">530</span> current = regionStateB;<a name="line.530"></a>
-<span class="sourceLineNo">531</span> try {<a name="line.531"></a>
-<span class="sourceLineNo">532</span> mergeable = isMergeable(env, current);<a name="line.532"></a>
-<span class="sourceLineNo">533</span> } catch (IOException e) {<a name="line.533"></a>
-<span class="sourceLineNo">534</span> mergeableCheckIOE = e;<a name="line.534"></a>
-<span class="sourceLineNo">535</span> }<a name="line.535"></a>
-<span class="sourceLineNo">536</span> }<a name="line.536"></a>
-<span class="sourceLineNo">537</span> if (!mergeable) {<a name="line.537"></a>
-<span class="sourceLineNo">538</span> IOException e = new IOException(current.getRegion().getShortNameToLog() + " NOT mergeable");<a name="line.538"></a>
-<span class="sourceLineNo">539</span> if (mergeableCheckIOE != null) e.initCause(mergeableCheckIOE);<a name="line.539"></a>
-<span class="sourceLineNo">540</span> super.setFailure(getClass().getSimpleName(), e);<a name="line.540"></a>
-<span class="sourceLineNo">541</span> return false;<a name="line.541"></a>
-<span class="sourceLineNo">542</span> }<a name="line.542"></a>
-<span class="sourceLineNo">543</span><a name="line.543"></a>
-<span class="sourceLineNo">544</span> // Update region states to Merging<a name="line.544"></a>
-<span class="sourceLineNo">545</span> setRegionStateToMerging(env);<a name="line.545"></a>
-<span class="sourceLineNo">546</span> return true;<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> private boolean isMergeable(final MasterProcedureEnv env, final RegionState rs)<a name="line.549"></a>
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-<span class="sourceLineNo">551</span> GetRegionInfoResponse response =<a name="line.551"></a>
-<span class="sourceLineNo">552</span> AssignmentManagerUtil.getRegionInfoResponse(env, rs.getServerName(), rs.getRegion());<a name="line.552"></a>
-<span class="sourceLineNo">553</span> return response.hasMergeable() && response.getMergeable();<a name="line.553"></a>
+<span class="sourceLineNo">483</span> // Fail if we are taking snapshot for the given table<a name="line.483"></a>
+<span class="sourceLineNo">484</span> if (env.getMasterServices().getSnapshotManager()<a name="line.484"></a>
+<span class="sourceLineNo">485</span> .isTakingSnapshot(regionsToMerge[0].getTable())) {<a name="line.485"></a>
+<span class="sourceLineNo">486</span> throw new MergeRegionException(<a name="line.486"></a>
+<span class="sourceLineNo">487</span> "Skip merging regions " + RegionInfo.getShortNameToLog(regionsToMerge) +<a name="line.487"></a>
+<span class="sourceLineNo">488</span> ", because we are taking snapshot for the table " + regionsToMerge[0].getTable());<a name="line.488"></a>
+<span class="sourceLineNo">489</span> }<a name="line.489"></a>
+<span class="sourceLineNo">490</span> // Note: the following logic assumes that we only have 2 regions to merge. In the future,<a name="line.490"></a>
+<span class="sourceLineNo">491</span> // if we want to extend to more than 2 regions, the code needs to be modified a little bit.<a name="line.491"></a>
+<span class="sourceLineNo">492</span> CatalogJanitor catalogJanitor = env.getMasterServices().getCatalogJanitor();<a name="line.492"></a>
+<span class="sourceLineNo">493</span> boolean regionAHasMergeQualifier = !catalogJanitor.cleanMergeQualifier(regionsToMerge[0]);<a name="line.493"></a>
+<span class="sourceLineNo">494</span> if (regionAHasMergeQualifier<a name="line.494"></a>
+<span class="sourceLineNo">495</span> || !catalogJanitor.cleanMergeQualifier(regionsToMerge[1])) {<a name="line.495"></a>
+<span class="sourceLineNo">496</span> String msg = "Skip merging regions " + RegionInfo.getShortNameToLog(regionsToMerge) +<a name="line.496"></a>
+<span class="sourceLineNo">497</span> ", because region "<a name="line.497"></a>
+<span class="sourceLineNo">498</span> + (regionAHasMergeQualifier ? regionsToMerge[0].getEncodedName() : regionsToMerge[1]<a name="line.498"></a>
+<span class="sourceLineNo">499</span> .getEncodedName()) + " has merge qualifier";<a name="line.499"></a>
+<span class="sourceLineNo">500</span> LOG.warn(msg);<a name="line.500"></a>
+<span class="sourceLineNo">501</span> throw new MergeRegionException(msg);<a name="line.501"></a>
+<span class="sourceLineNo">502</span> }<a name="line.502"></a>
+<span class="sourceLineNo">503</span><a name="line.503"></a>
+<span class="sourceLineNo">504</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.504"></a>
+<span class="sourceLineNo">505</span> RegionState regionStateA = regionStates.getRegionState(regionsToMerge[0].getEncodedName());<a name="line.505"></a>
+<span class="sourceLineNo">506</span> RegionState regionStateB = regionStates.getRegionState(regionsToMerge[1].getEncodedName());<a name="line.506"></a>
+<span class="sourceLineNo">507</span> if (regionStateA == null || regionStateB == null) {<a name="line.507"></a>
+<span class="sourceLineNo">508</span> throw new UnknownRegionException(<a name="line.508"></a>
+<span class="sourceLineNo">509</span> regionStateA == null ?<a name="line.509"></a>
+<span class="sourceLineNo">510</span> regionsToMerge[0].getEncodedName() : regionsToMerge[1].getEncodedName());<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> if (!regionStateA.isOpened() || !regionStateB.isOpened()) {<a name="line.513"></a>
+<span class="sourceLineNo">514</span> throw new MergeRegionException(<a name="line.514"></a>
+<span class="sourceLineNo">515</span> "Unable to merge regions that are not online " + regionStateA + ", " + regionStateB);<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> if (!env.getMasterServices().isSplitOrMergeEnabled(MasterSwitchType.MERGE)) {<a name="line.518"></a>
+<span class="sourceLineNo">519</span> String regionsStr = Arrays.deepToString(regionsToMerge);<a name="line.519"></a>
+<span class="sourceLineNo">520</span> LOG.warn("merge switch is off! skip merge of " + regionsStr);<a name="line.520"></a>
+<span class="sourceLineNo">521</span> super.setFailure(getClass().getSimpleName(),<a name="line.521"></a>
+<span class="sourceLineNo">522</span> new IOException("Merge of " + regionsStr + " failed because merge switch is off"));<a name="line.522"></a>
+<span class="sourceLineNo">523</span> return false;<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> // Ask the remote regionserver if regions are mergeable. If we get an IOE, report it<a name="line.526"></a>
+<span class="sourceLineNo">527</span> // along with the failure, so we can see why regions are not mergeable at this time.<a name="line.527"></a>
+<span class="sourceLineNo">528</span> IOException mergeableCheckIOE = null;<a name="line.528"></a>
+<span class="sourceLineNo">529</span> boolean mergeable = false;<a name="line.529"></a>
+<span class="sourceLineNo">530</span> RegionState current = regionStateA;<a name="line.530"></a>
+<span class="sourceLineNo">531</span> try {<a name="line.531"></a>
+<span class="sourceLineNo">532</span> mergeable = isMergeable(env, current);<a name="line.532"></a>
+<span class="sourceLineNo">533</span> } catch (IOException e) {<a name="line.533"></a>
+<span class="sourceLineNo">534</span> mergeableCheckIOE = e;<a name="line.534"></a>
+<span class="sourceLineNo">535</span> }<a name="line.535"></a>
+<span class="sourceLineNo">536</span> if (mergeable && mergeableCheckIOE == null) {<a name="line.536"></a>
+<span class="sourceLineNo">537</span> current = regionStateB;<a name="line.537"></a>
+<span class="sourceLineNo">538</span> try {<a name="line.538"></a>
+<span class="sourceLineNo">539</span> mergeable = isMergeable(env, current);<a name="line.539"></a>
+<span class="sourceLineNo">540</span> } catch (IOException e) {<a name="line.540"></a>
+<span class="sourceLineNo">541</span> mergeableCheckIOE = e;<a name="line.541"></a>
+<span class="sourceLineNo">542</span> }<a name="line.542"></a>
+<span class="sourceLineNo">543</span> }<a name="line.543"></a>
+<span class="sourceLineNo">544</span> if (!mergeable) {<a name="line.544"></a>
+<span class="sourceLineNo">545</span> IOException e = new IOException(current.getRegion().getShortNameToLog() + " NOT mergeable");<a name="line.545"></a>
+<span class="sourceLineNo">546</span> if (mergeableCheckIOE != null) e.initCause(mergeableCheckIOE);<a name="line.546"></a>
+<span class="sourceLineNo">547</span> super.setFailure(getClass().getSimpleName(), e);<a name="line.547"></a>
+<span class="sourceLineNo">548</span> return false;<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> // Update region states to Merging<a name="line.551"></a>
+<span class="sourceLineNo">552</span> setRegionStateToMerging(env);<a name="line.552"></a>
+<span class="sourceLineNo">553</span> return true;<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> * Pre merge region action<a name="line.557"></a>
-<span class="sourceLineNo">558</span> * @param env MasterProcedureEnv<a name="line.558"></a>
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-<span class="sourceLineNo">560</span> private void preMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.560"></a>
-<span class="sourceLineNo">561</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.561"></a>
-<span class="sourceLineNo">562</span> if (cpHost != null) {<a name="line.562"></a>
-<span class="sourceLineNo">563</span> cpHost.preMergeRegionsAction(regionsToMerge, getUser());<a name="line.563"></a>
-<span class="sourceLineNo">564</span> }<a name="line.564"></a>
-<span class="sourceLineNo">565</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.565"></a>
-<span class="sourceLineNo">566</span> try {<a name="line.566"></a>
-<span class="sourceLineNo">567</span> env.getMasterServices().getMasterQuotaManager().onRegionMerged(this.mergedRegion);<a name="line.567"></a>
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-<span class="sourceLineNo">570</span> NormalizationPlan.PlanType.MERGE);<a name="line.570"></a>
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-<span class="sourceLineNo">575</span> /**<a name="line.575"></a>
-<span class="sourceLineNo">576</span> * Action after rollback a merge table regions action.<a name="line.576"></a>
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-<span class="sourceLineNo">582</span> if (cpHost != null) {<a name="line.582"></a>
-<span class="sourceLineNo">583</span> cpHost.postRollBackMergeRegionsAction(regionsToMerge, getUser());<a name="line.583"></a>
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-<span class="sourceLineNo">587</span> /**<a name="line.587"></a>
-<span class="sourceLineNo">588</span> * Set the region states to MERGING state<a name="line.588"></a>
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-<span class="sourceLineNo">592</span> RegionStates regionStates = env.getAssignmentManager().getRegionStates();<a name="line.592"></a>
-<span class="sourceLineNo">593</span> regionStates.getRegionStateNode(regionsToMerge[0]).setState(State.MERGING);<a name="line.593"></a>
-<span class="sourceLineNo">594</span> regionStates.getRegionStateNode(regionsToMerge[1]).setState(State.MERGING);<a name="line.594"></a>
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-<span class="sourceLineNo">604</span> final FileSystem fs = mfs.getFileSystem();<a name="line.604"></a>
-<span class="sourceLineNo">605</span> HRegionFileSystem regionFs = HRegionFileSystem.openRegionFromFileSystem(<a name="line.605"></a>
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-<span class="sourceLineNo">609</span> mergeStoreFiles(env, regionFs, regionFs.getMergesDir());<a name="line.609"></a>
-<span class="sourceLineNo">610</span> HRegionFileSystem regionFs2 = HRegionFileSystem.openRegionFromFileSystem(<a name="line.610"></a>
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-<span class="sourceLineNo">613</span><a name="line.613"></a>
-<span class="sourceLineNo">614</span> regionFs.commitMergedRegion(mergedRegion);<a name="line.614"></a>
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+<span class="sourceLineNo">558</span> GetRegionInfoResponse response =<a name="line.558"></a>
+<span class="sourceLineNo">559</span> AssignmentManagerUtil.getRegionInfoResponse(env, rs.getServerName(), rs.getRegion());<a name="line.559"></a>
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+<span class="sourceLineNo">562</span><a name="line.562"></a>
+<span class="sourceLineNo">563</span> /**<a name="line.563"></a>
+<span class="sourceLineNo">564</span> * Pre merge region action<a name="line.564"></a>
+<span class="sourceLineNo">565</span> * @param env MasterProcedureEnv<a name="line.565"></a>
+<span class="sourceLineNo">566</span> **/<a name="line.566"></a>
+<span class="sourceLineNo">567</span> private void preMergeRegions(final MasterProcedureEnv env) throws IOException {<a name="line.567"></a>
+<span class="sourceLineNo">568</span> final MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();<a name="line.568"></a>
+<span class="sourceLineNo">569</span> if (cpHost != null) {<a name="line.569"></a>
+<span class="sourceLineNo">570</span> cpHost.preMergeRegionsAction(regionsToMerge, getUser());<a name="line.570"></a>
+<span class="sourceLineNo">571</span> }<a name="line.571"></a>
+<span class="sourceLineNo">572</span> // TODO: Clean up split and merge. Currently all over the place.<a name="line.572"></a>
+<span class="sourceLineNo">573</span> try {<a name="line.573"></a>
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+<span class="sourceLineNo">582</span> /**<a name="line.582"></a>
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+<span class="sourceLineNo">585</span> * @throws IOException<a name="line.585"></a>
+<span class="sourceLineNo">586</span> */<a name="line.586"></a>
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+<span class="sourceLineNo">591</span> }<a name="line.591"></a>
+<span class="sourceLineNo">592</span> }<a name="line.592"></a>
+<span class="sourceLineNo">593</span><a name="line.593"></a>
+<span class="sourceLineNo">594</span> /**<a name="line.594"></a>
+<span class="sourceLineNo">595</span> * Set the region states to MERGING state<a name="line.595"></a>
+<span class="sourceLineNo">596</span> */<a name="line.596"></a>
+<span class="sourceLineNo">597</span> private void setRegionStateToMerging(final MasterProcedureEnv env) {<a name="line.597"></a>
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+<span class="sourceLineNo">601</span> regionStates.getRegionStateNode(regionsToMerge[1]).setState(State.MERGING);<a name="line.601"></a>
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+<span class="sourceLineNo">603</span><a name="line.603"></a>
+<span class="sourceLineNo">604</span> /**<a name="line.604"></a>
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+<span class="sourceLineNo">607</span> */<a name="line.607"></a>
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+<span class="sourceLineNo">611</span> final FileSystem fs = mfs.getFileSystem();<a name="line.611"></a>
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+<span class="sourceLineNo">614</span> regionFs.createMergesDir();<a name="line.614"></a>
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+<span class="sourceLineNo">617</span> HRegionFileSystem regionFs2 = HRegionFileSystem.openRegionFromFileSystem(<a name="line.617"></a>
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+<span class="sourceLineNo">640</span><a name="line.640"></a>
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+<span class="sourceLineNo">648</span> // Create reference file(s) of the region in mergedDir<a name="line.648"></a>
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+<span class="sourceLineNo">705</span> try {<a name="line.705"></a>
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