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Posted to commits@hbase.apache.org by gi...@apache.org on 2020/08/12 20:19:32 UTC
[hbase-site] branch asf-site updated: Published site at
2e8120a63fd545e66e9e83cfde8ade80de3d3df0.
This is an automated email from the ASF dual-hosted git repository.
git-site-role pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/hbase-site.git
The following commit(s) were added to refs/heads/asf-site by this push:
new f4d2a79 Published site at 2e8120a63fd545e66e9e83cfde8ade80de3d3df0.
f4d2a79 is described below
commit f4d2a79b391d39e228f8f526dafcfa76720f6306
Author: jenkins <us...@infra.apache.org>
AuthorDate: Wed Aug 12 20:19:12 2020 +0000
Published site at 2e8120a63fd545e66e9e83cfde8ade80de3d3df0.
---
apache_hbase_reference_guide.pdf | 4 +-
book.html | 2 +-
checkstyle-aggregate.html | 12 +-
devapidocs/index-all.html | 27 +-
.../hadoop/hbase/client/class-use/RegionInfo.html | 9 +-
.../hbase/master/class-use/MasterServices.html | 5 +-
.../master/normalizer/MergeNormalizationPlan.html | 71 +-
.../SimpleRegionNormalizer.NormalizeContext.html | 20 +-
.../master/normalizer/SimpleRegionNormalizer.html | 10 +-
.../master/normalizer/SplitNormalizationPlan.html | 106 +--
.../master/normalizer/MergeNormalizationPlan.html | 116 ++-
.../SimpleRegionNormalizer.NormalizeContext.html | 239 +++---
.../master/normalizer/SimpleRegionNormalizer.html | 239 +++---
.../master/normalizer/SplitNormalizationPlan.html | 119 +--
testdevapidocs/index-all.html | 2 +
.../org/apache/hadoop/hbase/TableNameTestRule.html | 15 +-
.../apache/hadoop/hbase/backup/package-tree.html | 2 +-
.../hadoop/hbase/chaos/actions/package-tree.html | 2 +-
.../hadoop/hbase/class-use/TableNameTestRule.html | 28 +-
.../apache/hadoop/hbase/io/hfile/package-tree.html | 2 +-
.../normalizer/TestSimpleRegionNormalizer.html | 131 +--
.../org/apache/hadoop/hbase/package-tree.html | 14 +-
.../org/apache/hadoop/hbase/package-use.html | 5 +
.../hadoop/hbase/procedure2/package-tree.html | 4 +-
.../hadoop/hbase/regionserver/package-tree.html | 4 +-
.../org/apache/hadoop/hbase/test/package-tree.html | 2 +-
.../org/apache/hadoop/hbase/TableNameTestRule.html | 59 +-
.../normalizer/TestSimpleRegionNormalizer.html | 937 ++++++++++-----------
28 files changed, 1117 insertions(+), 1069 deletions(-)
diff --git a/apache_hbase_reference_guide.pdf b/apache_hbase_reference_guide.pdf
index d73e8ae..d61e390 100644
--- a/apache_hbase_reference_guide.pdf
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/Author (Apache HBase Team)
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diff --git a/book.html b/book.html
index 4eab687..774cf20 100644
--- a/book.html
+++ b/book.html
@@ -45993,7 +45993,7 @@ org/apache/hadoop/hbase/security/access/AccessControlClient.revoke:(Lorg/apache/
<div id="footer">
<div id="footer-text">
Version 3.0.0-SNAPSHOT<br>
-Last updated 2020-08-12 14:53:25 UTC
+Last updated 2020-08-12 20:04:09 UTC
</div>
</div>
<script type="text/x-mathjax-config">
diff --git a/checkstyle-aggregate.html b/checkstyle-aggregate.html
index 573f392..f562ba9 100644
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<tr class="a">
<td>annotation</td>
<td><a class="externalLink" href="http://checkstyle.sourceforge.net/config_annotation.html#MissingDeprecated">MissingDeprecated</a></td>
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@@ -40464,14 +40464,14 @@
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<td><img src="images/icon_error_sml.gif" alt="" /> Error</td>
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<td><img src="images/icon_error_sml.gif" alt="" /> Error</td>
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diff --git a/devapidocs/index-all.html b/devapidocs/index-all.html
index a4ada77..97d65df 100644
--- a/devapidocs/index-all.html
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@@ -29558,6 +29558,10 @@
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/balancer/ServerAndLoad.html#equals-java.lang.Object-">equals(Object)</a></span> - Method in class org.apache.hadoop.hbase.master.balancer.<a href="org/apache/hadoop/hbase/master/balancer/ServerAndLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">ServerAndLoad</a></dt>
<dd> </dd>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/RegionPlan.html#equals-java.lang.Object-">equals(Object)</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/RegionsRecoveryChore.html#equals-java.lang.Object-">equals(Object)</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/RegionsRecoveryChore.html" title="class in org.apache.hadoop.hbase.master">RegionsRecoveryChore</a></dt>
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</dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/MetricsMasterWrapperImpl.html#getSplitPlanCount--">getSplitPlanCount()</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/MetricsMasterWrapperImpl.html" title="class in org.apache.hadoop.hbase.master">MetricsMasterWrapperImpl</a></dt>
<dd> </dd>
-<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html#getSplitPoint--">getSplitPoint()</a></span> - Method in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html" title="class in org.apache.hadoop.hbase.master.normalizer">SplitNormalizationPlan</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/regionserver/DefaultStoreFileManager.html#getSplitPoint--">getSplitPoint()</a></span> - Method in class org.apache.hadoop.hbase.regionserver.<a href="org/apache/hadoop/hbase/regionserver/DefaultStoreFileManager.html" title="class in org.apache.hadoop.hbase.regionserver">DefaultStoreFileManager</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#getSplitPoint--">getSplitPoint()</a></span> - Method in class org.apache.hadoop.hbase.regionserver.<a href="org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">DelimitedKeyPrefixRegionSplitPolicy</a></dt>
@@ -57556,6 +57558,10 @@
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/balancer/ServerAndLoad.html#hashCode--">hashCode()</a></span> - Method in class org.apache.hadoop.hbase.master.balancer.<a href="org/apache/hadoop/hbase/master/balancer/ServerAndLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">ServerAndLoad</a></dt>
<dd> </dd>
+<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html#hashCode--">hashCode()</a></span> - Method in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html" title="class in org.apache.hadoop.hbase.master.normalizer">MergeNormalizationPlan</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/RegionPlan.html#hashCode--">hashCode()</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/RegionsRecoveryChore.html#hashCode--">hashCode()</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/RegionsRecoveryChore.html" title="class in org.apache.hadoop.hbase.master">RegionsRecoveryChore</a></dt>
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-<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/RegionNormalizerChore.html#LOG">LOG</a></span> - Static variable in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/RegionNormalizerChore.html" title="class in org.apache.hadoop.hbase.master.normalizer">RegionNormalizerChore</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html#LOG">LOG</a></span> - Static variable in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html" title="class in org.apache.hadoop.hbase.master.normalizer">SimpleRegionNormalizer</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html#LOG">LOG</a></span> - Static variable in class org.apache.hadoop.hbase.master.procedure.<a href="org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html" title="class in org.apache.hadoop.hbase.master.procedure">CloneSnapshotProcedure</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.html#LOG">LOG</a></span> - Static variable in class org.apache.hadoop.hbase.master.procedure.<a href="org/apache/hadoop/hbase/master/procedure/CreateNamespaceProcedure.html" title="class in org.apache.hadoop.hbase.master.procedure">CreateNamespaceProcedure</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/assignment/RegionStateNode.html#setRegionLocation-org.apache.hadoop.hbase.ServerName-">setRegionLocation(ServerName)</a></span> - Method in class org.apache.hadoop.hbase.master.assignment.<a href="org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/client/TableDescriptorBuilder.ModifyableTableDescriptor.html#setRegionMemStoreReplication-boolean-">setRegionMemStoreReplication(boolean)</a></span> - Method in class org.apache.hadoop.hbase.client.<a href="org/apache/hadoop/hbase/client/TableDescriptorBuilder.ModifyableTableDescriptor.html" title="class in org.apache.hadoop.hbase.client">TableDescriptorBuilder.ModifyableTableDescriptor</a></dt>
@@ -108480,8 +108480,6 @@ service.</div>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.html#setSplitOrMergeOn-boolean-boolean-org.apache.hadoop.hbase.client.MasterSwitchType-">setSplitOrMergeOn(boolean, boolean, MasterSwitchType)</a></span> - Method in class org.apache.hadoop.hbase.client.<a href="org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.html" title="class in org.apache.hadoop.hbase.client">RawAsyncHBaseAdmin</a></dt>
<dd> </dd>
-<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html#setSplitPoint-byte:A-">setSplitPoint(byte[])</a></span> - Method in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html" title="class in org.apache.hadoop.hbase.master.normalizer">SplitNormalizationPlan</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/client/RegionStatesCount.RegionStatesCountBuilder.html#setSplitRegions-int-">setSplitRegions(int)</a></span> - Method in class org.apache.hadoop.hbase.client.<a href="org/apache/hadoop/hbase/client/RegionStatesCount.RegionStatesCountBuilder.html" title="class in org.apache.hadoop.hbase.client">RegionStatesCount.RegionStatesCountBuilder</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/client/RegionStatesCount.html#setSplitRegions-int-">setSplitRegions(int)</a></span> - Method in class org.apache.hadoop.hbase.client.<a href="org/apache/hadoop/hbase/client/RegionStatesCount.html" title="class in org.apache.hadoop.hbase.client">RegionStatesCount</a></dt>
@@ -113012,7 +113010,7 @@ service.</div>
<dd>
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<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/HMaster.html#splitOrMergeTracker">splitOrMergeTracker</a></span> - Variable in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/HMaster.html" title="class in org.apache.hadoop.hbase.master">HMaster</a></dt>
<dd> </dd>
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<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/HMaster.html#splitPlanCount">splitPlanCount</a></span> - Variable in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/HMaster.html" title="class in org.apache.hadoop.hbase.master">HMaster</a></dt>
<dd> </dd>
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-<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html#splitPolicy">splitPolicy</a></span> - Variable in class org.apache.hadoop.hbase.master.assignment.<a href="org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.html" title="class in org.apache.hadoop.hbase.master.assignment">SplitTableRegionProcedure</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/regionserver/HRegion.html#splitPolicy">splitPolicy</a></span> - Variable in class org.apache.hadoop.hbase.regionserver.<a href="org/apache/hadoop/hbase/regionserver/HRegion.html" title="class in org.apache.hadoop.hbase.regionserver">HRegion</a></dt>
@@ -115734,10 +115730,7 @@ service.</div>
returns proc Id to caller.</div>
</dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html#submit-org.apache.hadoop.hbase.master.MasterServices-">submit(MasterServices)</a></span> - Method in class org.apache.hadoop.hbase.master.normalizer.<a href="org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html" title="class in org.apache.hadoop.hbase.master.normalizer">SplitNormalizationPlan</a></dt>
-<dd>
-<div class="block">Submits normalization plan on cluster (does actual splitting/merging work) and
- returns proc Id to caller.</div>
-</dd>
+<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/util/BoundedCompletionService.html#submit-java.util.concurrent.Callable-">submit(Callable<V>)</a></span> - Method in class org.apache.hadoop.hbase.util.<a href="org/apache/hadoop/hbase/util/BoundedCompletionService.html" title="class in org.apache.hadoop.hbase.util">BoundedCompletionService</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/procedure/ProcedureSyncWait.html#submitAndWaitProcedure-org.apache.hadoop.hbase.procedure2.ProcedureExecutor-org.apache.hadoop.hbase.procedure2.Procedure-">submitAndWaitProcedure(ProcedureExecutor<MasterProcedureEnv>, Procedure<MasterProcedureEnv>)</a></span> - Static method in class org.apache.hadoop.hbase.master.procedure.<a href="org/apache/hadoop/hbase/master/procedure/ProcedureSyncWait.html" title=" [...]
diff --git a/devapidocs/org/apache/hadoop/hbase/client/class-use/RegionInfo.html b/devapidocs/org/apache/hadoop/hbase/client/class-use/RegionInfo.html
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@@ -4416,17 +4416,13 @@ Input/OutputFormats, a table indexing MapReduce job, and utility methods.</div>
</td>
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<tr class="rowColor">
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<td class="colLast"><span class="typeNameLabel">SimpleRegionNormalizer.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html#skipForMerge-org.apache.hadoop.hbase.master.assignment.RegionStates-org.apache.hadoop.hbase.client.RegionInfo-">skipForMerge</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStates.html" title="class in org.apache.hadoop.hbase.master.assignment" [...]
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code>
<div class="block">Determine if a <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client"><code>RegionInfo</code></a> should be considered for a merge operation.</div>
</td>
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<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code>
@@ -4459,8 +4455,7 @@ Input/OutputFormats, a table indexing MapReduce job, and utility methods.</div>
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> secondRegion)</code> </td>
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<tr class="rowColor">
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- byte[] splitPoint)</code> </td>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html
index a994493..b6ccced 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.html
@@ -6,7 +6,7 @@
</head>
<body>
<div class="sourceContainer">
-<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> *<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
<span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a>
@@ -27,20 +27,20 @@
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.master.normalizer;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span><a name="line.22"></a>
-<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.HConstants;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a>
-<span class="sourceLineNo">029</span><a name="line.29"></a>
-<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
-<span class="sourceLineNo">031</span> * Normalization plan to merge regions (smallest region in the table with its smallest neighbor).<a name="line.31"></a>
-<span class="sourceLineNo">032</span> */<a name="line.32"></a>
-<span class="sourceLineNo">033</span>@InterfaceAudience.Private<a name="line.33"></a>
-<span class="sourceLineNo">034</span>public class MergeNormalizationPlan implements NormalizationPlan {<a name="line.34"></a>
-<span class="sourceLineNo">035</span> private static final Logger LOG = LoggerFactory.getLogger(MergeNormalizationPlan.class.getName());<a name="line.35"></a>
+<span class="sourceLineNo">022</span>import org.apache.commons.lang3.builder.EqualsBuilder;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.commons.lang3.builder.HashCodeBuilder;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import org.apache.commons.lang3.builder.ToStringBuilder;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import org.apache.commons.lang3.builder.ToStringStyle;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HConstants;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>/**<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * Normalization plan to merge regions (smallest region in the table with its smallest neighbor).<a name="line.32"></a>
+<span class="sourceLineNo">033</span> */<a name="line.33"></a>
+<span class="sourceLineNo">034</span>@InterfaceAudience.Private<a name="line.34"></a>
+<span class="sourceLineNo">035</span>public class MergeNormalizationPlan implements NormalizationPlan {<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span> private final RegionInfo firstRegion;<a name="line.37"></a>
<span class="sourceLineNo">038</span> private final RegionInfo secondRegion;<a name="line.38"></a>
@@ -55,37 +55,61 @@
<span class="sourceLineNo">047</span> */<a name="line.47"></a>
<span class="sourceLineNo">048</span> @Override<a name="line.48"></a>
<span class="sourceLineNo">049</span> public long submit(MasterServices masterServices) throws IOException {<a name="line.49"></a>
-<span class="sourceLineNo">050</span> LOG.info("Executing merging normalization plan: " + this);<a name="line.50"></a>
-<span class="sourceLineNo">051</span> // Do not use force=true as corner cases can happen, non adjacent regions,<a name="line.51"></a>
-<span class="sourceLineNo">052</span> // merge with a merged child region with no GC done yet, it is going to<a name="line.52"></a>
-<span class="sourceLineNo">053</span> // cause all different issues.<a name="line.53"></a>
-<span class="sourceLineNo">054</span> return masterServices<a name="line.54"></a>
-<span class="sourceLineNo">055</span> .mergeRegions(new RegionInfo[] { firstRegion, secondRegion }, false, HConstants.NO_NONCE,<a name="line.55"></a>
-<span class="sourceLineNo">056</span> HConstants.NO_NONCE);<a name="line.56"></a>
-<span class="sourceLineNo">057</span> }<a name="line.57"></a>
-<span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span> @Override<a name="line.59"></a>
-<span class="sourceLineNo">060</span> public PlanType getType() {<a name="line.60"></a>
-<span class="sourceLineNo">061</span> return PlanType.MERGE;<a name="line.61"></a>
-<span class="sourceLineNo">062</span> }<a name="line.62"></a>
-<span class="sourceLineNo">063</span><a name="line.63"></a>
-<span class="sourceLineNo">064</span> RegionInfo getFirstRegion() {<a name="line.64"></a>
-<span class="sourceLineNo">065</span> return firstRegion;<a name="line.65"></a>
-<span class="sourceLineNo">066</span> }<a name="line.66"></a>
-<span class="sourceLineNo">067</span><a name="line.67"></a>
-<span class="sourceLineNo">068</span> RegionInfo getSecondRegion() {<a name="line.68"></a>
-<span class="sourceLineNo">069</span> return secondRegion;<a name="line.69"></a>
-<span class="sourceLineNo">070</span> }<a name="line.70"></a>
-<span class="sourceLineNo">071</span><a name="line.71"></a>
-<span class="sourceLineNo">072</span> @Override<a name="line.72"></a>
-<span class="sourceLineNo">073</span> public String toString() {<a name="line.73"></a>
-<span class="sourceLineNo">074</span> return "MergeNormalizationPlan{" +<a name="line.74"></a>
-<span class="sourceLineNo">075</span> "firstRegion=" + firstRegion +<a name="line.75"></a>
-<span class="sourceLineNo">076</span> ", secondRegion=" + secondRegion +<a name="line.76"></a>
-<span class="sourceLineNo">077</span> '}';<a name="line.77"></a>
-<span class="sourceLineNo">078</span> }<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span>}<a name="line.80"></a>
+<span class="sourceLineNo">050</span> // Do not use force=true as corner cases can happen, non adjacent regions,<a name="line.50"></a>
+<span class="sourceLineNo">051</span> // merge with a merged child region with no GC done yet, it is going to<a name="line.51"></a>
+<span class="sourceLineNo">052</span> // cause all different issues.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> return masterServices<a name="line.53"></a>
+<span class="sourceLineNo">054</span> .mergeRegions(new RegionInfo[] { firstRegion, secondRegion }, false, HConstants.NO_NONCE,<a name="line.54"></a>
+<span class="sourceLineNo">055</span> HConstants.NO_NONCE);<a name="line.55"></a>
+<span class="sourceLineNo">056</span> }<a name="line.56"></a>
+<span class="sourceLineNo">057</span><a name="line.57"></a>
+<span class="sourceLineNo">058</span> @Override<a name="line.58"></a>
+<span class="sourceLineNo">059</span> public PlanType getType() {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> return PlanType.MERGE;<a name="line.60"></a>
+<span class="sourceLineNo">061</span> }<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span> RegionInfo getFirstRegion() {<a name="line.63"></a>
+<span class="sourceLineNo">064</span> return firstRegion;<a name="line.64"></a>
+<span class="sourceLineNo">065</span> }<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span> RegionInfo getSecondRegion() {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> return secondRegion;<a name="line.68"></a>
+<span class="sourceLineNo">069</span> }<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span> @Override<a name="line.71"></a>
+<span class="sourceLineNo">072</span> public String toString() {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)<a name="line.73"></a>
+<span class="sourceLineNo">074</span> .append("firstRegion", firstRegion)<a name="line.74"></a>
+<span class="sourceLineNo">075</span> .append("secondRegion", secondRegion)<a name="line.75"></a>
+<span class="sourceLineNo">076</span> .toString();<a name="line.76"></a>
+<span class="sourceLineNo">077</span> }<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> @Override<a name="line.79"></a>
+<span class="sourceLineNo">080</span> public boolean equals(Object o) {<a name="line.80"></a>
+<span class="sourceLineNo">081</span> if (this == o) {<a name="line.81"></a>
+<span class="sourceLineNo">082</span> return true;<a name="line.82"></a>
+<span class="sourceLineNo">083</span> }<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> if (o == null || getClass() != o.getClass()) {<a name="line.85"></a>
+<span class="sourceLineNo">086</span> return false;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> }<a name="line.87"></a>
+<span class="sourceLineNo">088</span><a name="line.88"></a>
+<span class="sourceLineNo">089</span> MergeNormalizationPlan that = (MergeNormalizationPlan) o;<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> return new EqualsBuilder()<a name="line.91"></a>
+<span class="sourceLineNo">092</span> .append(firstRegion, that.firstRegion)<a name="line.92"></a>
+<span class="sourceLineNo">093</span> .append(secondRegion, that.secondRegion)<a name="line.93"></a>
+<span class="sourceLineNo">094</span> .isEquals();<a name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> @Override<a name="line.97"></a>
+<span class="sourceLineNo">098</span> public int hashCode() {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> return new HashCodeBuilder(17, 37)<a name="line.99"></a>
+<span class="sourceLineNo">100</span> .append(firstRegion)<a name="line.100"></a>
+<span class="sourceLineNo">101</span> .append(secondRegion)<a name="line.101"></a>
+<span class="sourceLineNo">102</span> .toHashCode();<a name="line.102"></a>
+<span class="sourceLineNo">103</span> }<a name="line.103"></a>
+<span class="sourceLineNo">104</span>}<a name="line.104"></a>
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.NormalizeContext.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.NormalizeContext.html
index 135eadd..6cc1d3c 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.NormalizeContext.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.NormalizeContext.html
@@ -377,125 +377,126 @@
<span class="sourceLineNo">369</span> }<a name="line.369"></a>
<span class="sourceLineNo">370</span> final long currentSizeMb = getRegionSizeMB(current);<a name="line.370"></a>
<span class="sourceLineNo">371</span> final long nextSizeMb = getRegionSizeMB(next);<a name="line.371"></a>
-<span class="sourceLineNo">372</span> if (currentSizeMb + nextSizeMb < avgRegionSizeMb) {<a name="line.372"></a>
-<span class="sourceLineNo">373</span> plans.add(new MergeNormalizationPlan(current, next));<a name="line.373"></a>
-<span class="sourceLineNo">374</span> candidateIdx++;<a name="line.374"></a>
-<span class="sourceLineNo">375</span> }<a name="line.375"></a>
-<span class="sourceLineNo">376</span> }<a name="line.376"></a>
-<span class="sourceLineNo">377</span> return plans;<a name="line.377"></a>
-<span class="sourceLineNo">378</span> }<a name="line.378"></a>
-<span class="sourceLineNo">379</span><a name="line.379"></a>
-<span class="sourceLineNo">380</span> /**<a name="line.380"></a>
-<span class="sourceLineNo">381</span> * Determine if a region in {@link RegionState} should be considered for a split operation.<a name="line.381"></a>
-<span class="sourceLineNo">382</span> */<a name="line.382"></a>
-<span class="sourceLineNo">383</span> private static boolean skipForSplit(final RegionState state, final RegionInfo regionInfo) {<a name="line.383"></a>
-<span class="sourceLineNo">384</span> final String name = regionInfo.getEncodedName();<a name="line.384"></a>
-<span class="sourceLineNo">385</span> return<a name="line.385"></a>
-<span class="sourceLineNo">386</span> logTraceReason(<a name="line.386"></a>
-<span class="sourceLineNo">387</span> () -> state == null,<a name="line.387"></a>
-<span class="sourceLineNo">388</span> "skipping split of region {} because no state information is available.", name)<a name="line.388"></a>
-<span class="sourceLineNo">389</span> || logTraceReason(<a name="line.389"></a>
-<span class="sourceLineNo">390</span> () -> !Objects.equals(state.getState(), RegionState.State.OPEN),<a name="line.390"></a>
-<span class="sourceLineNo">391</span> "skipping merge of region {} because it is not open.", name);<a name="line.391"></a>
-<span class="sourceLineNo">392</span> }<a name="line.392"></a>
-<span class="sourceLineNo">393</span><a name="line.393"></a>
-<span class="sourceLineNo">394</span> /**<a name="line.394"></a>
-<span class="sourceLineNo">395</span> * Computes the split plans that should be executed for this table to converge average region size<a name="line.395"></a>
-<span class="sourceLineNo">396</span> * towards target average or target region count.<a name="line.396"></a>
-<span class="sourceLineNo">397</span> * <br /><a name="line.397"></a>
-<span class="sourceLineNo">398</span> * if the region is > 2 times larger than average, we split it. split<a name="line.398"></a>
-<span class="sourceLineNo">399</span> * is more high priority normalization action than merge.<a name="line.399"></a>
-<span class="sourceLineNo">400</span> */<a name="line.400"></a>
-<span class="sourceLineNo">401</span> private List<NormalizationPlan> computeSplitNormalizationPlans(final NormalizeContext ctx) {<a name="line.401"></a>
-<span class="sourceLineNo">402</span> final double avgRegionSize = ctx.getAverageRegionSizeMb();<a name="line.402"></a>
-<span class="sourceLineNo">403</span> LOG.debug("Table {}, average region size: {}", ctx.getTableName(), avgRegionSize);<a name="line.403"></a>
-<span class="sourceLineNo">404</span><a name="line.404"></a>
-<span class="sourceLineNo">405</span> final List<NormalizationPlan> plans = new ArrayList<>();<a name="line.405"></a>
-<span class="sourceLineNo">406</span> for (final RegionInfo hri : ctx.getTableRegions()) {<a name="line.406"></a>
-<span class="sourceLineNo">407</span> if (skipForSplit(ctx.getRegionStates().getRegionState(hri), hri)) {<a name="line.407"></a>
-<span class="sourceLineNo">408</span> continue;<a name="line.408"></a>
-<span class="sourceLineNo">409</span> }<a name="line.409"></a>
-<span class="sourceLineNo">410</span> final long regionSize = getRegionSizeMB(hri);<a name="line.410"></a>
-<span class="sourceLineNo">411</span> if (regionSize > 2 * avgRegionSize) {<a name="line.411"></a>
-<span class="sourceLineNo">412</span> LOG.info("Table {}, large region {} has size {}, more than twice avg size {}, splitting",<a name="line.412"></a>
-<span class="sourceLineNo">413</span> ctx.getTableName(), hri.getRegionNameAsString(), regionSize, avgRegionSize);<a name="line.413"></a>
-<span class="sourceLineNo">414</span> plans.add(new SplitNormalizationPlan(hri, null));<a name="line.414"></a>
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-<span class="sourceLineNo">417</span> return plans;<a name="line.417"></a>
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-<span class="sourceLineNo">419</span><a name="line.419"></a>
-<span class="sourceLineNo">420</span> /**<a name="line.420"></a>
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-<span class="sourceLineNo">422</span> * enough to be considered for a merge operation, {@code false} otherwise.<a name="line.422"></a>
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-<span class="sourceLineNo">425</span> final Instant currentTime = Instant.ofEpochMilli(EnvironmentEdgeManager.currentTime());<a name="line.425"></a>
-<span class="sourceLineNo">426</span> final Instant regionCreateTime = Instant.ofEpochMilli(regionInfo.getRegionId());<a name="line.426"></a>
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-<span class="sourceLineNo">429</span><a name="line.429"></a>
-<span class="sourceLineNo">430</span> /**<a name="line.430"></a>
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-<span class="sourceLineNo">432</span> * to be considered for a merge operation, {@code false} otherwise.<a name="line.432"></a>
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-<span class="sourceLineNo">435</span> return getRegionSizeMB(regionInfo) >= mergeMinRegionSizeMb;<a name="line.435"></a>
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-<span class="sourceLineNo">440</span> final boolean value = predicate.getAsBoolean();<a name="line.440"></a>
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-<span class="sourceLineNo">442</span> LOG.trace(fmtWhenTrue, args);<a name="line.442"></a>
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-<span class="sourceLineNo">444</span> return value;<a name="line.444"></a>
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-<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> * Inner class caries the state necessary to perform a single invocation of<a name="line.448"></a>
-<span class="sourceLineNo">449</span> * {@link #computePlansForTable(TableName)}. Grabbing this data from the assignment manager<a name="line.449"></a>
-<span class="sourceLineNo">450</span> * up-front allows any computed values to be realized just once.<a name="line.450"></a>
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-<span class="sourceLineNo">458</span> public NormalizeContext(final TableName tableName) {<a name="line.458"></a>
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-<span class="sourceLineNo">460</span> regionStates = SimpleRegionNormalizer.this.masterServices<a name="line.460"></a>
-<span class="sourceLineNo">461</span> .getAssignmentManager()<a name="line.461"></a>
-<span class="sourceLineNo">462</span> .getRegionStates();<a name="line.462"></a>
-<span class="sourceLineNo">463</span> tableRegions = regionStates.getRegionsOfTable(tableName);<a name="line.463"></a>
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-<span class="sourceLineNo">465</span> // regionName does not necessary guarantee the order by STARTKEY (let's say 'aa1', 'aa1!',<a name="line.465"></a>
-<span class="sourceLineNo">466</span> // in order by regionName, it will be 'aa1!' followed by 'aa1').<a name="line.466"></a>
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-<span class="sourceLineNo">468</span> // In order to avoid that, sort the list by RegionInfo.COMPARATOR.<a name="line.468"></a>
-<span class="sourceLineNo">469</span> // See HBASE-24376<a name="line.469"></a>
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-<span class="sourceLineNo">471</span> averageRegionSizeMb = SimpleRegionNormalizer.this.getAverageRegionSizeMb(this.tableRegions);<a name="line.471"></a>
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-<span class="sourceLineNo">473</span><a name="line.473"></a>
-<span class="sourceLineNo">474</span> public TableName getTableName() {<a name="line.474"></a>
-<span class="sourceLineNo">475</span> return tableName;<a name="line.475"></a>
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-<span class="sourceLineNo">477</span><a name="line.477"></a>
-<span class="sourceLineNo">478</span> public RegionStates getRegionStates() {<a name="line.478"></a>
-<span class="sourceLineNo">479</span> return regionStates;<a name="line.479"></a>
-<span class="sourceLineNo">480</span> }<a name="line.480"></a>
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+<span class="sourceLineNo">413</span> LOG.info("Table {}, large region {} has size {}, more than twice avg size {}, splitting",<a name="line.413"></a>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html
index 135eadd..6cc1d3c 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.html
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-<span class="sourceLineNo">480</span> }<a name="line.480"></a>
-<span class="sourceLineNo">481</span><a name="line.481"></a>
-<span class="sourceLineNo">482</span> public List<RegionInfo> getTableRegions() {<a name="line.482"></a>
-<span class="sourceLineNo">483</span> return tableRegions;<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> public double getAverageRegionSizeMb() {<a name="line.486"></a>
-<span class="sourceLineNo">487</span> return averageRegionSizeMb;<a name="line.487"></a>
-<span class="sourceLineNo">488</span> }<a name="line.488"></a>
-<span class="sourceLineNo">489</span> }<a name="line.489"></a>
-<span class="sourceLineNo">490</span>}<a name="line.490"></a>
+<span class="sourceLineNo">372</span> // always merge away empty regions when they present themselves.<a name="line.372"></a>
+<span class="sourceLineNo">373</span> if (currentSizeMb == 0 || nextSizeMb == 0 || currentSizeMb + nextSizeMb < avgRegionSizeMb) {<a name="line.373"></a>
+<span class="sourceLineNo">374</span> plans.add(new MergeNormalizationPlan(current, next));<a name="line.374"></a>
+<span class="sourceLineNo">375</span> candidateIdx++;<a name="line.375"></a>
+<span class="sourceLineNo">376</span> }<a name="line.376"></a>
+<span class="sourceLineNo">377</span> }<a name="line.377"></a>
+<span class="sourceLineNo">378</span> return plans;<a name="line.378"></a>
+<span class="sourceLineNo">379</span> }<a name="line.379"></a>
+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span> /**<a name="line.381"></a>
+<span class="sourceLineNo">382</span> * Determine if a region in {@link RegionState} should be considered for a split operation.<a name="line.382"></a>
+<span class="sourceLineNo">383</span> */<a name="line.383"></a>
+<span class="sourceLineNo">384</span> private static boolean skipForSplit(final RegionState state, final RegionInfo regionInfo) {<a name="line.384"></a>
+<span class="sourceLineNo">385</span> final String name = regionInfo.getEncodedName();<a name="line.385"></a>
+<span class="sourceLineNo">386</span> return<a name="line.386"></a>
+<span class="sourceLineNo">387</span> logTraceReason(<a name="line.387"></a>
+<span class="sourceLineNo">388</span> () -> state == null,<a name="line.388"></a>
+<span class="sourceLineNo">389</span> "skipping split of region {} because no state information is available.", name)<a name="line.389"></a>
+<span class="sourceLineNo">390</span> || logTraceReason(<a name="line.390"></a>
+<span class="sourceLineNo">391</span> () -> !Objects.equals(state.getState(), RegionState.State.OPEN),<a name="line.391"></a>
+<span class="sourceLineNo">392</span> "skipping merge of region {} because it is not open.", name);<a name="line.392"></a>
+<span class="sourceLineNo">393</span> }<a name="line.393"></a>
+<span class="sourceLineNo">394</span><a name="line.394"></a>
+<span class="sourceLineNo">395</span> /**<a name="line.395"></a>
+<span class="sourceLineNo">396</span> * Computes the split plans that should be executed for this table to converge average region size<a name="line.396"></a>
+<span class="sourceLineNo">397</span> * towards target average or target region count.<a name="line.397"></a>
+<span class="sourceLineNo">398</span> * <br /><a name="line.398"></a>
+<span class="sourceLineNo">399</span> * if the region is > 2 times larger than average, we split it. split<a name="line.399"></a>
+<span class="sourceLineNo">400</span> * is more high priority normalization action than merge.<a name="line.400"></a>
+<span class="sourceLineNo">401</span> */<a name="line.401"></a>
+<span class="sourceLineNo">402</span> private List<NormalizationPlan> computeSplitNormalizationPlans(final NormalizeContext ctx) {<a name="line.402"></a>
+<span class="sourceLineNo">403</span> final double avgRegionSize = ctx.getAverageRegionSizeMb();<a name="line.403"></a>
+<span class="sourceLineNo">404</span> LOG.debug("Table {}, average region size: {}", ctx.getTableName(), avgRegionSize);<a name="line.404"></a>
+<span class="sourceLineNo">405</span><a name="line.405"></a>
+<span class="sourceLineNo">406</span> final List<NormalizationPlan> plans = new ArrayList<>();<a name="line.406"></a>
+<span class="sourceLineNo">407</span> for (final RegionInfo hri : ctx.getTableRegions()) {<a name="line.407"></a>
+<span class="sourceLineNo">408</span> if (skipForSplit(ctx.getRegionStates().getRegionState(hri), hri)) {<a name="line.408"></a>
+<span class="sourceLineNo">409</span> continue;<a name="line.409"></a>
+<span class="sourceLineNo">410</span> }<a name="line.410"></a>
+<span class="sourceLineNo">411</span> final long regionSize = getRegionSizeMB(hri);<a name="line.411"></a>
+<span class="sourceLineNo">412</span> if (regionSize > 2 * avgRegionSize) {<a name="line.412"></a>
+<span class="sourceLineNo">413</span> LOG.info("Table {}, large region {} has size {}, more than twice avg size {}, splitting",<a name="line.413"></a>
+<span class="sourceLineNo">414</span> ctx.getTableName(), hri.getRegionNameAsString(), regionSize, avgRegionSize);<a name="line.414"></a>
+<span class="sourceLineNo">415</span> plans.add(new SplitNormalizationPlan(hri));<a name="line.415"></a>
+<span class="sourceLineNo">416</span> }<a name="line.416"></a>
+<span class="sourceLineNo">417</span> }<a name="line.417"></a>
+<span class="sourceLineNo">418</span> return plans;<a name="line.418"></a>
+<span class="sourceLineNo">419</span> }<a name="line.419"></a>
+<span class="sourceLineNo">420</span><a name="line.420"></a>
+<span class="sourceLineNo">421</span> /**<a name="line.421"></a>
+<span class="sourceLineNo">422</span> * Return {@code true} when {@code regionInfo} has a creation date that is old<a name="line.422"></a>
+<span class="sourceLineNo">423</span> * enough to be considered for a merge operation, {@code false} otherwise.<a name="line.423"></a>
+<span class="sourceLineNo">424</span> */<a name="line.424"></a>
+<span class="sourceLineNo">425</span> private boolean isOldEnoughForMerge(final RegionInfo regionInfo) {<a name="line.425"></a>
+<span class="sourceLineNo">426</span> final Instant currentTime = Instant.ofEpochMilli(EnvironmentEdgeManager.currentTime());<a name="line.426"></a>
+<span class="sourceLineNo">427</span> final Instant regionCreateTime = Instant.ofEpochMilli(regionInfo.getRegionId());<a name="line.427"></a>
+<span class="sourceLineNo">428</span> return currentTime.isAfter(regionCreateTime.plus(mergeMinRegionAge));<a name="line.428"></a>
+<span class="sourceLineNo">429</span> }<a name="line.429"></a>
+<span class="sourceLineNo">430</span><a name="line.430"></a>
+<span class="sourceLineNo">431</span> /**<a name="line.431"></a>
+<span class="sourceLineNo">432</span> * Return {@code true} when {@code regionInfo} has a size that is sufficient<a name="line.432"></a>
+<span class="sourceLineNo">433</span> * to be considered for a merge operation, {@code false} otherwise.<a name="line.433"></a>
+<span class="sourceLineNo">434</span> */<a name="line.434"></a>
+<span class="sourceLineNo">435</span> private boolean isLargeEnoughForMerge(final RegionInfo regionInfo) {<a name="line.435"></a>
+<span class="sourceLineNo">436</span> return getRegionSizeMB(regionInfo) >= mergeMinRegionSizeMb;<a name="line.436"></a>
+<span class="sourceLineNo">437</span> }<a name="line.437"></a>
+<span class="sourceLineNo">438</span><a name="line.438"></a>
+<span class="sourceLineNo">439</span> private static boolean logTraceReason(final BooleanSupplier predicate, final String fmtWhenTrue,<a name="line.439"></a>
+<span class="sourceLineNo">440</span> final Object... args) {<a name="line.440"></a>
+<span class="sourceLineNo">441</span> final boolean value = predicate.getAsBoolean();<a name="line.441"></a>
+<span class="sourceLineNo">442</span> if (value) {<a name="line.442"></a>
+<span class="sourceLineNo">443</span> LOG.trace(fmtWhenTrue, args);<a name="line.443"></a>
+<span class="sourceLineNo">444</span> }<a name="line.444"></a>
+<span class="sourceLineNo">445</span> return value;<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> /**<a name="line.448"></a>
+<span class="sourceLineNo">449</span> * Inner class caries the state necessary to perform a single invocation of<a name="line.449"></a>
+<span class="sourceLineNo">450</span> * {@link #computePlansForTable(TableName)}. Grabbing this data from the assignment manager<a name="line.450"></a>
+<span class="sourceLineNo">451</span> * up-front allows any computed values to be realized just once.<a name="line.451"></a>
+<span class="sourceLineNo">452</span> */<a name="line.452"></a>
+<span class="sourceLineNo">453</span> private class NormalizeContext {<a name="line.453"></a>
+<span class="sourceLineNo">454</span> private final TableName tableName;<a name="line.454"></a>
+<span class="sourceLineNo">455</span> private final RegionStates regionStates;<a name="line.455"></a>
+<span class="sourceLineNo">456</span> private final List<RegionInfo> tableRegions;<a name="line.456"></a>
+<span class="sourceLineNo">457</span> private final double averageRegionSizeMb;<a name="line.457"></a>
+<span class="sourceLineNo">458</span><a name="line.458"></a>
+<span class="sourceLineNo">459</span> public NormalizeContext(final TableName tableName) {<a name="line.459"></a>
+<span class="sourceLineNo">460</span> this.tableName = tableName;<a name="line.460"></a>
+<span class="sourceLineNo">461</span> regionStates = SimpleRegionNormalizer.this.masterServices<a name="line.461"></a>
+<span class="sourceLineNo">462</span> .getAssignmentManager()<a name="line.462"></a>
+<span class="sourceLineNo">463</span> .getRegionStates();<a name="line.463"></a>
+<span class="sourceLineNo">464</span> tableRegions = regionStates.getRegionsOfTable(tableName);<a name="line.464"></a>
+<span class="sourceLineNo">465</span> // The list of regionInfo from getRegionsOfTable() is ordered by regionName.<a name="line.465"></a>
+<span class="sourceLineNo">466</span> // regionName does not necessary guarantee the order by STARTKEY (let's say 'aa1', 'aa1!',<a name="line.466"></a>
+<span class="sourceLineNo">467</span> // in order by regionName, it will be 'aa1!' followed by 'aa1').<a name="line.467"></a>
+<span class="sourceLineNo">468</span> // This could result in normalizer merging non-adjacent regions into one and creates overlaps.<a name="line.468"></a>
+<span class="sourceLineNo">469</span> // In order to avoid that, sort the list by RegionInfo.COMPARATOR.<a name="line.469"></a>
+<span class="sourceLineNo">470</span> // See HBASE-24376<a name="line.470"></a>
+<span class="sourceLineNo">471</span> tableRegions.sort(RegionInfo.COMPARATOR);<a name="line.471"></a>
+<span class="sourceLineNo">472</span> averageRegionSizeMb = SimpleRegionNormalizer.this.getAverageRegionSizeMb(this.tableRegions);<a name="line.472"></a>
+<span class="sourceLineNo">473</span> }<a name="line.473"></a>
+<span class="sourceLineNo">474</span><a name="line.474"></a>
+<span class="sourceLineNo">475</span> public TableName getTableName() {<a name="line.475"></a>
+<span class="sourceLineNo">476</span> return tableName;<a name="line.476"></a>
+<span class="sourceLineNo">477</span> }<a name="line.477"></a>
+<span class="sourceLineNo">478</span><a name="line.478"></a>
+<span class="sourceLineNo">479</span> public RegionStates getRegionStates() {<a name="line.479"></a>
+<span class="sourceLineNo">480</span> return regionStates;<a name="line.480"></a>
+<span class="sourceLineNo">481</span> }<a name="line.481"></a>
+<span class="sourceLineNo">482</span><a name="line.482"></a>
+<span class="sourceLineNo">483</span> public List<RegionInfo> getTableRegions() {<a name="line.483"></a>
+<span class="sourceLineNo">484</span> return tableRegions;<a name="line.484"></a>
+<span class="sourceLineNo">485</span> }<a name="line.485"></a>
+<span class="sourceLineNo">486</span><a name="line.486"></a>
+<span class="sourceLineNo">487</span> public double getAverageRegionSizeMb() {<a name="line.487"></a>
+<span class="sourceLineNo">488</span> return averageRegionSizeMb;<a name="line.488"></a>
+<span class="sourceLineNo">489</span> }<a name="line.489"></a>
+<span class="sourceLineNo">490</span> }<a name="line.490"></a>
+<span class="sourceLineNo">491</span>}<a name="line.491"></a>
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html
index 050dbe0..94994cd 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.html
@@ -6,7 +6,7 @@
</head>
<body>
<div class="sourceContainer">
-<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> *<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
<span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a>
@@ -27,67 +27,72 @@
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.master.normalizer;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.util.Arrays;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.HConstants;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a>
-<span class="sourceLineNo">029</span><a name="line.29"></a>
-<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
-<span class="sourceLineNo">031</span> * Normalization plan to split region.<a name="line.31"></a>
-<span class="sourceLineNo">032</span> */<a name="line.32"></a>
-<span class="sourceLineNo">033</span>@InterfaceAudience.Private<a name="line.33"></a>
-<span class="sourceLineNo">034</span>public class SplitNormalizationPlan implements NormalizationPlan {<a name="line.34"></a>
-<span class="sourceLineNo">035</span> private static final Logger LOG = LoggerFactory.getLogger(SplitNormalizationPlan.class.getName());<a name="line.35"></a>
+<span class="sourceLineNo">022</span>import org.apache.commons.lang3.builder.EqualsBuilder;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.commons.lang3.builder.HashCodeBuilder;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import org.apache.commons.lang3.builder.ToStringBuilder;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import org.apache.commons.lang3.builder.ToStringStyle;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HConstants;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>/**<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * Normalization plan to split region.<a name="line.32"></a>
+<span class="sourceLineNo">033</span> */<a name="line.33"></a>
+<span class="sourceLineNo">034</span>@InterfaceAudience.Private<a name="line.34"></a>
+<span class="sourceLineNo">035</span>public class SplitNormalizationPlan implements NormalizationPlan {<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
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-<span class="sourceLineNo">042</span> this.splitPoint = splitPoint;<a name="line.42"></a>
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-<span class="sourceLineNo">055</span> return PlanType.SPLIT;<a name="line.55"></a>
+<span class="sourceLineNo">037</span> private final RegionInfo regionInfo;<a name="line.37"></a>
+<span class="sourceLineNo">038</span><a name="line.38"></a>
+<span class="sourceLineNo">039</span> public SplitNormalizationPlan(RegionInfo regionInfo) {<a name="line.39"></a>
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+<span class="sourceLineNo">042</span><a name="line.42"></a>
+<span class="sourceLineNo">043</span> @Override<a name="line.43"></a>
+<span class="sourceLineNo">044</span> public long submit(MasterServices masterServices) throws IOException {<a name="line.44"></a>
+<span class="sourceLineNo">045</span> return masterServices.splitRegion(regionInfo, null, HConstants.NO_NONCE,<a name="line.45"></a>
+<span class="sourceLineNo">046</span> HConstants.NO_NONCE);<a name="line.46"></a>
+<span class="sourceLineNo">047</span> }<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span> @Override<a name="line.49"></a>
+<span class="sourceLineNo">050</span> public PlanType getType() {<a name="line.50"></a>
+<span class="sourceLineNo">051</span> return PlanType.SPLIT;<a name="line.51"></a>
+<span class="sourceLineNo">052</span> }<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span> public RegionInfo getRegionInfo() {<a name="line.54"></a>
+<span class="sourceLineNo">055</span> return regionInfo;<a name="line.55"></a>
<span class="sourceLineNo">056</span> }<a name="line.56"></a>
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-<span class="sourceLineNo">075</span> public String toString() {<a name="line.75"></a>
-<span class="sourceLineNo">076</span> return "SplitNormalizationPlan{" +<a name="line.76"></a>
-<span class="sourceLineNo">077</span> "regionInfo=" + regionInfo +<a name="line.77"></a>
-<span class="sourceLineNo">078</span> ", splitPoint=" + Arrays.toString(splitPoint) +<a name="line.78"></a>
-<span class="sourceLineNo">079</span> '}';<a name="line.79"></a>
+<span class="sourceLineNo">058</span> @Override<a name="line.58"></a>
+<span class="sourceLineNo">059</span> public String toString() {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)<a name="line.60"></a>
+<span class="sourceLineNo">061</span> .append("regionInfo", regionInfo)<a name="line.61"></a>
+<span class="sourceLineNo">062</span> .toString();<a name="line.62"></a>
+<span class="sourceLineNo">063</span> }<a name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span> @Override<a name="line.65"></a>
+<span class="sourceLineNo">066</span> public boolean equals(Object o) {<a name="line.66"></a>
+<span class="sourceLineNo">067</span> if (this == o) {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> return true;<a name="line.68"></a>
+<span class="sourceLineNo">069</span> }<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span> if (o == null || getClass() != o.getClass()) {<a name="line.71"></a>
+<span class="sourceLineNo">072</span> return false;<a name="line.72"></a>
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+<span class="sourceLineNo">074</span><a name="line.74"></a>
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+<span class="sourceLineNo">038</span> * names look like 'foo[x]'. This is problematic for tests that use this name for HBase tables.<a name="line.38"></a>
+<span class="sourceLineNo">039</span> * This helper strips out the parameter suffixes.<a name="line.39"></a>
+<span class="sourceLineNo">040</span> * @return current test method name with out parameterized suffixes.<a name="line.40"></a>
+<span class="sourceLineNo">041</span> */<a name="line.41"></a>
+<span class="sourceLineNo">042</span> private static String cleanUpTestName(String methodName) {<a name="line.42"></a>
+<span class="sourceLineNo">043</span> int index = methodName.indexOf('[');<a name="line.43"></a>
+<span class="sourceLineNo">044</span> if (index == -1) {<a name="line.44"></a>
+<span class="sourceLineNo">045</span> return methodName;<a name="line.45"></a>
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+<span class="sourceLineNo">047</span> return methodName.substring(0, index);<a name="line.47"></a>
+<span class="sourceLineNo">048</span> }<a name="line.48"></a>
+<span class="sourceLineNo">049</span><a name="line.49"></a>
+<span class="sourceLineNo">050</span> public TableName getTableName() {<a name="line.50"></a>
+<span class="sourceLineNo">051</span> return tableName;<a name="line.51"></a>
+<span class="sourceLineNo">052</span> }<a name="line.52"></a>
+<span class="sourceLineNo">053</span>}<a name="line.53"></a>
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizer.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizer.html
index 09761b7..a805431 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizer.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizer.html
@@ -38,480 +38,479 @@
<span class="sourceLineNo">030</span>import static org.hamcrest.Matchers.everyItem;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import static org.hamcrest.Matchers.greaterThanOrEqualTo;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import static org.hamcrest.Matchers.instanceOf;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import static org.hamcrest.Matchers.iterableWithSize;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import static org.hamcrest.Matchers.not;<a name="line.34"></a>
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-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.ServerName;<a name="line.52"></a>
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-<span class="sourceLineNo">116</span> public void testNoNormalizationOnNormalizedCluster() {<a name="line.116"></a>
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-<span class="sourceLineNo">118</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 4);<a name="line.118"></a>
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+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.RegionMetrics;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.ServerName;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.Size;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.TableName;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.TableNameTestRule;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.junit.Before;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.junit.ClassRule;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.junit.Rule;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.junit.Test;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.junit.experimental.categories.Category;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.mockito.Mockito;<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span>/**<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * Tests logic of {@link SimpleRegionNormalizer}.<a name="line.70"></a>
+<span class="sourceLineNo">071</span> */<a name="line.71"></a>
+<span class="sourceLineNo">072</span>@Category({MasterTests.class, SmallTests.class})<a name="line.72"></a>
+<span class="sourceLineNo">073</span>public class TestSimpleRegionNormalizer {<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span> @ClassRule<a name="line.75"></a>
+<span class="sourceLineNo">076</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.76"></a>
+<span class="sourceLineNo">077</span> HBaseClassTestRule.forClass(TestSimpleRegionNormalizer.class);<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> private Configuration conf;<a name="line.79"></a>
+<span class="sourceLineNo">080</span> private SimpleRegionNormalizer normalizer;<a name="line.80"></a>
+<span class="sourceLineNo">081</span> private MasterServices masterServices;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span> @Rule<a name="line.83"></a>
+<span class="sourceLineNo">084</span> public TableNameTestRule name = new TableNameTestRule();<a name="line.84"></a>
+<span class="sourceLineNo">085</span><a name="line.85"></a>
+<span class="sourceLineNo">086</span> @Before<a name="line.86"></a>
+<span class="sourceLineNo">087</span> public void before() {<a name="line.87"></a>
+<span class="sourceLineNo">088</span> conf = HBaseConfiguration.create();<a name="line.88"></a>
+<span class="sourceLineNo">089</span> }<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> @Test<a name="line.91"></a>
+<span class="sourceLineNo">092</span> public void testNoNormalizationForMetaTable() {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> TableName testTable = TableName.META_TABLE_NAME;<a name="line.93"></a>
+<span class="sourceLineNo">094</span> List<RegionInfo> RegionInfo = new ArrayList<>();<a name="line.94"></a>
+<span class="sourceLineNo">095</span> Map<byte[], Integer> regionSizes = new HashMap<>();<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> setupMocksForNormalizer(regionSizes, RegionInfo);<a name="line.97"></a>
+<span class="sourceLineNo">098</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(testTable);<a name="line.98"></a>
+<span class="sourceLineNo">099</span> assertThat(plans, empty());<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> @Test<a name="line.102"></a>
+<span class="sourceLineNo">103</span> public void testNoNormalizationIfTooFewRegions() {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> final TableName tableName = name.getTableName();<a name="line.104"></a>
+<span class="sourceLineNo">105</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 2);<a name="line.105"></a>
+<span class="sourceLineNo">106</span> final Map<byte[], Integer> regionSizes = createRegionSizesMap(regionInfos, 10, 15);<a name="line.106"></a>
+<span class="sourceLineNo">107</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.107"></a>
+<span class="sourceLineNo">108</span><a name="line.108"></a>
+<span class="sourceLineNo">109</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> assertThat(plans, empty());<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span> @Test<a name="line.113"></a>
+<span class="sourceLineNo">114</span> public void testNoNormalizationOnNormalizedCluster() {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> final TableName tableName = name.getTableName();<a name="line.115"></a>
+<span class="sourceLineNo">116</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 4);<a name="line.116"></a>
+<span class="sourceLineNo">117</span> final Map<byte[], Integer> regionSizes =<a name="line.117"></a>
+<span class="sourceLineNo">118</span> createRegionSizesMap(regionInfos, 10, 15, 8, 10);<a name="line.118"></a>
+<span class="sourceLineNo">119</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.119"></a>
+<span class="sourceLineNo">120</span><a name="line.120"></a>
+<span class="sourceLineNo">121</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.121"></a>
+<span class="sourceLineNo">122</span> assertThat(plans, empty());<a name="line.122"></a>
+<span class="sourceLineNo">123</span> }<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
+<span class="sourceLineNo">125</span> private void noNormalizationOnTransitioningRegions(final RegionState.State state) {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> final TableName tableName = name.getTableName();<a name="line.126"></a>
+<span class="sourceLineNo">127</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 3);<a name="line.127"></a>
+<span class="sourceLineNo">128</span> final Map<byte[], Integer> regionSizes = createRegionSizesMap(regionInfos, 10, 1, 100);<a name="line.128"></a>
+<span class="sourceLineNo">129</span><a name="line.129"></a>
+<span class="sourceLineNo">130</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.130"></a>
+<span class="sourceLineNo">131</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.131"></a>
+<span class="sourceLineNo">132</span> .getRegionState(any(RegionInfo.class)))<a name="line.132"></a>
+<span class="sourceLineNo">133</span> .thenReturn(RegionState.createForTesting(null, state));<a name="line.133"></a>
+<span class="sourceLineNo">134</span> assertThat(normalizer.getMinRegionCount(), greaterThanOrEqualTo(regionInfos.size()));<a name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.136"></a>
+<span class="sourceLineNo">137</span> assertThat(format("Unexpected plans for RegionState %s", state), plans, empty());<a name="line.137"></a>
+<span class="sourceLineNo">138</span> }<a name="line.138"></a>
+<span class="sourceLineNo">139</span><a name="line.139"></a>
+<span class="sourceLineNo">140</span> @Test<a name="line.140"></a>
+<span class="sourceLineNo">141</span> public void testNoNormalizationOnMergingNewRegions() {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> noNormalizationOnTransitioningRegions(RegionState.State.MERGING_NEW);<a name="line.142"></a>
+<span class="sourceLineNo">143</span> }<a name="line.143"></a>
+<span class="sourceLineNo">144</span><a name="line.144"></a>
+<span class="sourceLineNo">145</span> @Test<a name="line.145"></a>
+<span class="sourceLineNo">146</span> public void testNoNormalizationOnMergingRegions() {<a name="line.146"></a>
+<span class="sourceLineNo">147</span> noNormalizationOnTransitioningRegions(RegionState.State.MERGING);<a name="line.147"></a>
+<span class="sourceLineNo">148</span> }<a name="line.148"></a>
+<span class="sourceLineNo">149</span><a name="line.149"></a>
+<span class="sourceLineNo">150</span> @Test<a name="line.150"></a>
+<span class="sourceLineNo">151</span> public void testNoNormalizationOnMergedRegions() {<a name="line.151"></a>
+<span class="sourceLineNo">152</span> noNormalizationOnTransitioningRegions(RegionState.State.MERGED);<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span><a name="line.154"></a>
+<span class="sourceLineNo">155</span> @Test<a name="line.155"></a>
+<span class="sourceLineNo">156</span> public void testNoNormalizationOnSplittingNewRegions() {<a name="line.156"></a>
+<span class="sourceLineNo">157</span> noNormalizationOnTransitioningRegions(RegionState.State.SPLITTING_NEW);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> }<a name="line.158"></a>
+<span class="sourceLineNo">159</span><a name="line.159"></a>
+<span class="sourceLineNo">160</span> @Test<a name="line.160"></a>
+<span class="sourceLineNo">161</span> public void testNoNormalizationOnSplittingRegions() {<a name="line.161"></a>
+<span class="sourceLineNo">162</span> noNormalizationOnTransitioningRegions(RegionState.State.SPLITTING);<a name="line.162"></a>
+<span class="sourceLineNo">163</span> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span><a name="line.164"></a>
+<span class="sourceLineNo">165</span> @Test<a name="line.165"></a>
+<span class="sourceLineNo">166</span> public void testNoNormalizationOnSplitRegions() {<a name="line.166"></a>
+<span class="sourceLineNo">167</span> noNormalizationOnTransitioningRegions(RegionState.State.SPLIT);<a name="line.167"></a>
+<span class="sourceLineNo">168</span> }<a name="line.168"></a>
+<span class="sourceLineNo">169</span><a name="line.169"></a>
+<span class="sourceLineNo">170</span> @Test<a name="line.170"></a>
+<span class="sourceLineNo">171</span> public void testMergeOfSmallRegions() {<a name="line.171"></a>
+<span class="sourceLineNo">172</span> final TableName tableName = name.getTableName();<a name="line.172"></a>
+<span class="sourceLineNo">173</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 5);<a name="line.173"></a>
+<span class="sourceLineNo">174</span> final Map<byte[], Integer> regionSizes =<a name="line.174"></a>
+<span class="sourceLineNo">175</span> createRegionSizesMap(regionInfos, 15, 5, 5, 15, 16);<a name="line.175"></a>
+<span class="sourceLineNo">176</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.176"></a>
+<span class="sourceLineNo">177</span><a name="line.177"></a>
+<span class="sourceLineNo">178</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.178"></a>
+<span class="sourceLineNo">179</span> new MergeNormalizationPlan(regionInfos.get(1), regionInfos.get(2))));<a name="line.179"></a>
+<span class="sourceLineNo">180</span> }<a name="line.180"></a>
+<span class="sourceLineNo">181</span><a name="line.181"></a>
+<span class="sourceLineNo">182</span> // Test for situation illustrated in HBASE-14867<a name="line.182"></a>
+<span class="sourceLineNo">183</span> @Test<a name="line.183"></a>
+<span class="sourceLineNo">184</span> public void testMergeOfSecondSmallestRegions() {<a name="line.184"></a>
+<span class="sourceLineNo">185</span> final TableName tableName = name.getTableName();<a name="line.185"></a>
+<span class="sourceLineNo">186</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 6);<a name="line.186"></a>
+<span class="sourceLineNo">187</span> final Map<byte[], Integer> regionSizes =<a name="line.187"></a>
+<span class="sourceLineNo">188</span> createRegionSizesMap(regionInfos, 1, 10000, 10000, 10000, 2700, 2700);<a name="line.188"></a>
+<span class="sourceLineNo">189</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.189"></a>
+<span class="sourceLineNo">190</span><a name="line.190"></a>
+<span class="sourceLineNo">191</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.191"></a>
+<span class="sourceLineNo">192</span> new MergeNormalizationPlan(regionInfos.get(4), regionInfos.get(5))<a name="line.192"></a>
+<span class="sourceLineNo">193</span> ));<a name="line.193"></a>
+<span class="sourceLineNo">194</span> }<a name="line.194"></a>
+<span class="sourceLineNo">195</span><a name="line.195"></a>
+<span class="sourceLineNo">196</span> @Test<a name="line.196"></a>
+<span class="sourceLineNo">197</span> public void testMergeOfSmallNonAdjacentRegions() {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> final TableName tableName = name.getTableName();<a name="line.198"></a>
+<span class="sourceLineNo">199</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 5);<a name="line.199"></a>
+<span class="sourceLineNo">200</span> final Map<byte[], Integer> regionSizes =<a name="line.200"></a>
+<span class="sourceLineNo">201</span> createRegionSizesMap(regionInfos, 15, 5, 16, 15, 5);<a name="line.201"></a>
+<span class="sourceLineNo">202</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.202"></a>
+<span class="sourceLineNo">203</span><a name="line.203"></a>
+<span class="sourceLineNo">204</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.204"></a>
+<span class="sourceLineNo">205</span> assertThat(plans, empty());<a name="line.205"></a>
+<span class="sourceLineNo">206</span> }<a name="line.206"></a>
+<span class="sourceLineNo">207</span><a name="line.207"></a>
+<span class="sourceLineNo">208</span> @Test<a name="line.208"></a>
+<span class="sourceLineNo">209</span> public void testSplitOfLargeRegion() {<a name="line.209"></a>
+<span class="sourceLineNo">210</span> final TableName tableName = name.getTableName();<a name="line.210"></a>
+<span class="sourceLineNo">211</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 4);<a name="line.211"></a>
+<span class="sourceLineNo">212</span> final Map<byte[], Integer> regionSizes =<a name="line.212"></a>
+<span class="sourceLineNo">213</span> createRegionSizesMap(regionInfos, 8, 6, 10, 30);<a name="line.213"></a>
+<span class="sourceLineNo">214</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.214"></a>
+<span class="sourceLineNo">215</span><a name="line.215"></a>
+<span class="sourceLineNo">216</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.216"></a>
+<span class="sourceLineNo">217</span> new SplitNormalizationPlan(regionInfos.get(3))));<a name="line.217"></a>
+<span class="sourceLineNo">218</span> }<a name="line.218"></a>
+<span class="sourceLineNo">219</span><a name="line.219"></a>
+<span class="sourceLineNo">220</span> @Test<a name="line.220"></a>
+<span class="sourceLineNo">221</span> public void testSplitWithTargetRegionSize() throws Exception {<a name="line.221"></a>
+<span class="sourceLineNo">222</span> final TableName tableName = name.getTableName();<a name="line.222"></a>
+<span class="sourceLineNo">223</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 6);<a name="line.223"></a>
+<span class="sourceLineNo">224</span> final Map<byte[], Integer> regionSizes =<a name="line.224"></a>
+<span class="sourceLineNo">225</span> createRegionSizesMap(regionInfos, 20, 40, 60, 80, 100, 120);<a name="line.225"></a>
+<span class="sourceLineNo">226</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
-<span class="sourceLineNo">228</span> @Test<a name="line.228"></a>
-<span class="sourceLineNo">229</span> public void testSplitWithTargetRegionCount() throws Exception {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> final TableName tableName = TableName.valueOf(name.getMethodName());<a name="line.230"></a>
-<span class="sourceLineNo">231</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 6);<a name="line.231"></a>
-<span class="sourceLineNo">232</span> final Map<byte[], Integer> regionSizes =<a name="line.232"></a>
-<span class="sourceLineNo">233</span> createRegionSizesMap(regionInfos, 20, 40, 60, 80, 100, 120);<a name="line.233"></a>
-<span class="sourceLineNo">234</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.234"></a>
-<span class="sourceLineNo">235</span><a name="line.235"></a>
-<span class="sourceLineNo">236</span> // test when target region size is 20<a name="line.236"></a>
-<span class="sourceLineNo">237</span> when(masterServices.getTableDescriptors().get(any()).getNormalizerTargetRegionSize())<a name="line.237"></a>
-<span class="sourceLineNo">238</span> .thenReturn(20L);<a name="line.238"></a>
-<span class="sourceLineNo">239</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.239"></a>
-<span class="sourceLineNo">240</span> assertThat(plans, iterableWithSize(4));<a name="line.240"></a>
-<span class="sourceLineNo">241</span> assertThat(plans, everyItem(instanceOf(SplitNormalizationPlan.class)));<a name="line.241"></a>
-<span class="sourceLineNo">242</span><a name="line.242"></a>
-<span class="sourceLineNo">243</span> // test when target region size is 200<a name="line.243"></a>
-<span class="sourceLineNo">244</span> when(masterServices.getTableDescriptors().get(any()).getNormalizerTargetRegionSize())<a name="line.244"></a>
-<span class="sourceLineNo">245</span> .thenReturn(200L);<a name="line.245"></a>
-<span class="sourceLineNo">246</span> plans = normalizer.computePlansForTable(tableName);<a name="line.246"></a>
-<span class="sourceLineNo">247</span> assertThat(plans, iterableWithSize(2));<a name="line.247"></a>
-<span class="sourceLineNo">248</span> assertTrue(plans.get(0) instanceof MergeNormalizationPlan);<a name="line.248"></a>
-<span class="sourceLineNo">249</span> MergeNormalizationPlan plan = (MergeNormalizationPlan) plans.get(0);<a name="line.249"></a>
-<span class="sourceLineNo">250</span> assertEquals(regionInfos.get(0), plan.getFirstRegion());<a name="line.250"></a>
-<span class="sourceLineNo">251</span> assertEquals(regionInfos.get(1), plan.getSecondRegion());<a name="line.251"></a>
-<span class="sourceLineNo">252</span> }<a name="line.252"></a>
+<span class="sourceLineNo">228</span> // test when target region size is 20<a name="line.228"></a>
+<span class="sourceLineNo">229</span> when(masterServices.getTableDescriptors().get(any()).getNormalizerTargetRegionSize())<a name="line.229"></a>
+<span class="sourceLineNo">230</span> .thenReturn(20L);<a name="line.230"></a>
+<span class="sourceLineNo">231</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.231"></a>
+<span class="sourceLineNo">232</span> new SplitNormalizationPlan(regionInfos.get(2)),<a name="line.232"></a>
+<span class="sourceLineNo">233</span> new SplitNormalizationPlan(regionInfos.get(3)),<a name="line.233"></a>
+<span class="sourceLineNo">234</span> new SplitNormalizationPlan(regionInfos.get(4)),<a name="line.234"></a>
+<span class="sourceLineNo">235</span> new SplitNormalizationPlan(regionInfos.get(5))<a name="line.235"></a>
+<span class="sourceLineNo">236</span> ));<a name="line.236"></a>
+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span> // test when target region size is 200<a name="line.238"></a>
+<span class="sourceLineNo">239</span> when(masterServices.getTableDescriptors().get(any()).getNormalizerTargetRegionSize())<a name="line.239"></a>
+<span class="sourceLineNo">240</span> .thenReturn(200L);<a name="line.240"></a>
+<span class="sourceLineNo">241</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.241"></a>
+<span class="sourceLineNo">242</span> new MergeNormalizationPlan(regionInfos.get(0), regionInfos.get(1)),<a name="line.242"></a>
+<span class="sourceLineNo">243</span> new MergeNormalizationPlan(regionInfos.get(2), regionInfos.get(3))));<a name="line.243"></a>
+<span class="sourceLineNo">244</span> }<a name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
+<span class="sourceLineNo">246</span> @Test<a name="line.246"></a>
+<span class="sourceLineNo">247</span> public void testSplitWithTargetRegionCount() throws Exception {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> final TableName tableName = name.getTableName();<a name="line.248"></a>
+<span class="sourceLineNo">249</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 4);<a name="line.249"></a>
+<span class="sourceLineNo">250</span> final Map<byte[], Integer> regionSizes =<a name="line.250"></a>
+<span class="sourceLineNo">251</span> createRegionSizesMap(regionInfos, 20, 40, 60, 80);<a name="line.251"></a>
+<span class="sourceLineNo">252</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.252"></a>
<span class="sourceLineNo">253</span><a name="line.253"></a>
-<span class="sourceLineNo">254</span> @Test<a name="line.254"></a>
-<span class="sourceLineNo">255</span> public void testSplitWithTargetRegionSize() throws Exception {<a name="line.255"></a>
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+<span class="sourceLineNo">254</span> // test when target region count is 8<a name="line.254"></a>
+<span class="sourceLineNo">255</span> when(masterServices.getTableDescriptors().get(any()).getNormalizerTargetRegionCount())<a name="line.255"></a>
+<span class="sourceLineNo">256</span> .thenReturn(8);<a name="line.256"></a>
+<span class="sourceLineNo">257</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.257"></a>
+<span class="sourceLineNo">258</span> new SplitNormalizationPlan(regionInfos.get(2)),<a name="line.258"></a>
+<span class="sourceLineNo">259</span> new SplitNormalizationPlan(regionInfos.get(3))));<a name="line.259"></a>
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+<span class="sourceLineNo">261</span> // test when target region count is 3<a name="line.261"></a>
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-<span class="sourceLineNo">264</span> List<NormalizationPlan> plans = normalizer.computePlansForTable(tableName);<a name="line.264"></a>
-<span class="sourceLineNo">265</span> assertThat(plans, iterableWithSize(2));<a name="line.265"></a>
-<span class="sourceLineNo">266</span> assertThat(plans, everyItem(instanceOf(SplitNormalizationPlan.class)));<a name="line.266"></a>
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+<span class="sourceLineNo">266</span> }<a name="line.266"></a>
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-<span class="sourceLineNo">306</span><a name="line.306"></a>
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-<span class="sourceLineNo">318</span> // merge is only created when the when the number of table regions is above the region count<a name="line.318"></a>
-<span class="sourceLineNo">319</span> // threshold, and that the split plan is create in both cases.<a name="line.319"></a>
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-<span class="sourceLineNo">326</span> instanceOf(MergeNormalizationPlan.class)));<a name="line.326"></a>
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-<span class="sourceLineNo">331</span> assertEquals(regionInfos.get(1), mergePlan.getSecondRegion());<a name="line.331"></a>
-<span class="sourceLineNo">332</span><a name="line.332"></a>
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-<span class="sourceLineNo">346</span> final List<RegionInfo> regionInfos = createRegionInfos(tableName, 4);<a name="line.346"></a>
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-<span class="sourceLineNo">354</span><a name="line.354"></a>
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-<span class="sourceLineNo">372</span><a name="line.372"></a>
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-<span class="sourceLineNo">393</span> // [, "aa"), ["aa", "aa1"), ["aa1", "aa1!"), ["aa1!", "aa2"), ["aa2", )<a name="line.393"></a>
-<span class="sourceLineNo">394</span> // Region ["aa", "aa1") and ["aa1!", "aa2") are not adjacent, they are not supposed to<a name="line.394"></a>
-<span class="sourceLineNo">395</span> // merged.<a name="line.395"></a>
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-<span class="sourceLineNo">400</span> Bytes.toBytes("aa1"),<a name="line.400"></a>
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-<span class="sourceLineNo">407</span><a name="line.407"></a>
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-<span class="sourceLineNo">418</span> // for simplicity all regions are assumed to be on one server; doesn't matter to us<a name="line.418"></a>
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-<span class="sourceLineNo">420</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.420"></a>
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-<span class="sourceLineNo">422</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.422"></a>
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-<span class="sourceLineNo">424</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.424"></a>
-<span class="sourceLineNo">425</span> .getRegionState(any(RegionInfo.class))).thenReturn(<a name="line.425"></a>
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-<span class="sourceLineNo">431</span> when(regionLoad.getStoreFileSize())<a name="line.431"></a>
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+<span class="sourceLineNo">364</span> assertEquals(3, normalizer.getMergeMinRegionSizeMb());<a name="line.364"></a>
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+<span class="sourceLineNo">376</span> setupMocksForNormalizer(regionSizes, regionInfos);<a name="line.376"></a>
+<span class="sourceLineNo">377</span><a name="line.377"></a>
+<span class="sourceLineNo">378</span> assertFalse(normalizer.isSplitEnabled());<a name="line.378"></a>
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+<span class="sourceLineNo">380</span> assertThat(normalizer.computePlansForTable(tableName), contains(<a name="line.380"></a>
+<span class="sourceLineNo">381</span> new MergeNormalizationPlan(regionInfos.get(0), regionInfos.get(1)),<a name="line.381"></a>
+<span class="sourceLineNo">382</span> new MergeNormalizationPlan(regionInfos.get(2), regionInfos.get(3)),<a name="line.382"></a>
+<span class="sourceLineNo">383</span> new MergeNormalizationPlan(regionInfos.get(5), regionInfos.get(6))));<a name="line.383"></a>
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+<span class="sourceLineNo">385</span><a name="line.385"></a>
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+<span class="sourceLineNo">388</span> public void testNormalizerCannotMergeNonAdjacentRegions() {<a name="line.388"></a>
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+<span class="sourceLineNo">391</span> // [, "aa"), ["aa", "aa1"), ["aa1", "aa1!"), ["aa1!", "aa2"), ["aa2", )<a name="line.391"></a>
+<span class="sourceLineNo">392</span> // Region ["aa", "aa1") and ["aa1!", "aa2") are not adjacent, they are not supposed to<a name="line.392"></a>
+<span class="sourceLineNo">393</span> // merged.<a name="line.393"></a>
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+<span class="sourceLineNo">395</span> null,<a name="line.395"></a>
+<span class="sourceLineNo">396</span> Bytes.toBytes("aa"),<a name="line.396"></a>
+<span class="sourceLineNo">397</span> Bytes.toBytes("aa1!"),<a name="line.397"></a>
+<span class="sourceLineNo">398</span> Bytes.toBytes("aa1"),<a name="line.398"></a>
+<span class="sourceLineNo">399</span> Bytes.toBytes("aa2"),<a name="line.399"></a>
+<span class="sourceLineNo">400</span> null,<a name="line.400"></a>
+<span class="sourceLineNo">401</span> };<a name="line.401"></a>
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+<span class="sourceLineNo">406</span><a name="line.406"></a>
+<span class="sourceLineNo">407</span> // Compute the plan, no merge plan returned as they are not adjacent.<a name="line.407"></a>
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+<span class="sourceLineNo">414</span> List<RegionInfo> regionInfoList) {<a name="line.414"></a>
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+<span class="sourceLineNo">419</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.419"></a>
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+<span class="sourceLineNo">421</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.421"></a>
+<span class="sourceLineNo">422</span> .getRegionServerOfRegion(any())).thenReturn(sn);<a name="line.422"></a>
+<span class="sourceLineNo">423</span> when(masterServices.getAssignmentManager().getRegionStates()<a name="line.423"></a>
+<span class="sourceLineNo">424</span> .getRegionState(any(RegionInfo.class))).thenReturn(<a name="line.424"></a>
+<span class="sourceLineNo">425</span> RegionState.createForTesting(null, RegionState.State.OPEN));<a name="line.425"></a>
+<span class="sourceLineNo">426</span><a name="line.426"></a>
+<span class="sourceLineNo">427</span> for (Map.Entry<byte[], Integer> region : regionSizes.entrySet()) {<a name="line.427"></a>
+<span class="sourceLineNo">428</span> RegionMetrics regionLoad = Mockito.mock(RegionMetrics.class);<a name="line.428"></a>
+<span class="sourceLineNo">429</span> when(regionLoad.getRegionName()).thenReturn(region.getKey());<a name="line.429"></a>
+<span class="sourceLineNo">430</span> when(regionLoad.getStoreFileSize())<a name="line.430"></a>
+<span class="sourceLineNo">431</span> .thenReturn(new Size(region.getValue(), Size.Unit.MEGABYTE));<a name="line.431"></a>
+<span class="sourceLineNo">432</span><a name="line.432"></a>
+<span class="sourceLineNo">433</span> // this is possibly broken with jdk9, unclear if false positive or not<a name="line.433"></a>
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+<span class="sourceLineNo">437</span> .getRegionMetrics().get(region.getKey())).thenReturn(regionLoad);<a name="line.437"></a>
+<span class="sourceLineNo">438</span> }<a name="line.438"></a>
+<span class="sourceLineNo">439</span><a name="line.439"></a>
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+<span class="sourceLineNo">447</span> /**<a name="line.447"></a>
+<span class="sourceLineNo">448</span> * Create a list of {@link RegionInfo}s that represent a region chain of the specified length.<a name="line.448"></a>
+<span class="sourceLineNo">449</span> */<a name="line.449"></a>
+<span class="sourceLineNo">450</span> private static List<RegionInfo> createRegionInfos(final TableName tableName, final int length) {<a name="line.450"></a>
+<span class="sourceLineNo">451</span> if (length < 1) {<a name="line.451"></a>
+<span class="sourceLineNo">452</span> throw new IllegalStateException("length must be greater than or equal to 1.");<a name="line.452"></a>
+<span class="sourceLineNo">453</span> }<a name="line.453"></a>
+<span class="sourceLineNo">454</span><a name="line.454"></a>
+<span class="sourceLineNo">455</span> final byte[] startKey = Bytes.toBytes("aaaaa");<a name="line.455"></a>
+<span class="sourceLineNo">456</span> final byte[] endKey = Bytes.toBytes("zzzzz");<a name="line.456"></a>
+<span class="sourceLineNo">457</span> if (length == 1) {<a name="line.457"></a>
+<span class="sourceLineNo">458</span> return Collections.singletonList(createRegionInfo(tableName, startKey, endKey));<a name="line.458"></a>
+<span class="sourceLineNo">459</span> }<a name="line.459"></a>
+<span class="sourceLineNo">460</span><a name="line.460"></a>
+<span class="sourceLineNo">461</span> final byte[][] splitKeys = Bytes.split(startKey, endKey, length - 1);<a name="line.461"></a>
+<span class="sourceLineNo">462</span> final List<RegionInfo> ret = new ArrayList<>(length);<a name="line.462"></a>
+<span class="sourceLineNo">463</span> for (int i = 0; i < splitKeys.length - 1; i++) {<a name="line.463"></a>
+<span class="sourceLineNo">464</span> ret.add(createRegionInfo(tableName, splitKeys[i], splitKeys[i+1]));<a name="line.464"></a>
+<span class="sourceLineNo">465</span> }<a name="line.465"></a>
+<span class="sourceLineNo">466</span> return ret;<a name="line.466"></a>
+<span class="sourceLineNo">467</span> }<a name="line.467"></a>
+<span class="sourceLineNo">468</span><a name="line.468"></a>
+<span class="sourceLineNo">469</span> private static RegionInfo createRegionInfo(final TableName tableName, final byte[] startKey,<a name="line.469"></a>
+<span class="sourceLineNo">470</span> final byte[] endKey) {<a name="line.470"></a>
+<span class="sourceLineNo">471</span> return RegionInfoBuilder.newBuilder(tableName)<a name="line.471"></a>
+<span class="sourceLineNo">472</span> .setStartKey(startKey)<a name="line.472"></a>
+<span class="sourceLineNo">473</span> .setEndKey(endKey)<a name="line.473"></a>
+<span class="sourceLineNo">474</span> .setRegionId(generateRegionId())<a name="line.474"></a>
+<span class="sourceLineNo">475</span> .build();<a name="line.475"></a>
+<span class="sourceLineNo">476</span> }<a name="line.476"></a>
+<span class="sourceLineNo">477</span><a name="line.477"></a>
+<span class="sourceLineNo">478</span> private static long generateRegionId() {<a name="line.478"></a>
+<span class="sourceLineNo">479</span> return Instant.ofEpochMilli(EnvironmentEdgeManager.currentTime())<a name="line.479"></a>
+<span class="sourceLineNo">480</span> .minus(Period.ofDays(DEFAULT_MERGE_MIN_REGION_AGE_DAYS + 1))<a name="line.480"></a>
+<span class="sourceLineNo">481</span> .toEpochMilli();<a name="line.481"></a>
+<span class="sourceLineNo">482</span> }<a name="line.482"></a>
+<span class="sourceLineNo">483</span><a name="line.483"></a>
+<span class="sourceLineNo">484</span> private static List<RegionInfo> createRegionInfos(final TableName tableName,<a name="line.484"></a>
+<span class="sourceLineNo">485</span> final byte[][] splitKeys) {<a name="line.485"></a>
+<span class="sourceLineNo">486</span> final List<RegionInfo> ret = new ArrayList<>(splitKeys.length);<a name="line.486"></a>
+<span class="sourceLineNo">487</span> for (int i = 0; i < splitKeys.length - 1; i++) {<a name="line.487"></a>
+<span class="sourceLineNo">488</span> ret.add(createRegionInfo(tableName, splitKeys[i], splitKeys[i+1]));<a name="line.488"></a>
+<span class="sourceLineNo">489</span> }<a name="line.489"></a>
+<span class="sourceLineNo">490</span> return ret;<a name="line.490"></a>
+<span class="sourceLineNo">491</span> }<a name="line.491"></a>
+<span class="sourceLineNo">492</span><a name="line.492"></a>
+<span class="sourceLineNo">493</span> private static Map<byte[], Integer> createRegionSizesMap(final List<RegionInfo> regionInfos,<a name="line.493"></a>
+<span class="sourceLineNo">494</span> int... sizes) {<a name="line.494"></a>
+<span class="sourceLineNo">495</span> if (regionInfos.size() != sizes.length) {<a name="line.495"></a>
+<span class="sourceLineNo">496</span> throw new IllegalStateException("Parameter lengths must match.");<a name="line.496"></a>
+<span class="sourceLineNo">497</span> }<a name="line.497"></a>
+<span class="sourceLineNo">498</span><a name="line.498"></a>
+<span class="sourceLineNo">499</span> final Map<byte[], Integer> ret = new HashMap<>(regionInfos.size());<a name="line.499"></a>
+<span class="sourceLineNo">500</span> for (int i = 0; i < regionInfos.size(); i++) {<a name="line.500"></a>
+<span class="sourceLineNo">501</span> ret.put(regionInfos.get(i).getRegionName(), sizes[i]);<a name="line.501"></a>
+<span class="sourceLineNo">502</span> }<a name="line.502"></a>
+<span class="sourceLineNo">503</span> return ret;<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>