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https://issues.apache.org/jira/browse/HBASE-13103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597364#comment-14597364
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Hudson commented on HBASE-13103:
--------------------------------
SUCCESS: Integrated in HBase-1.2-IT #17 (See
[https://builds.apache.org/job/HBase-1.2-IT/17/])
HBASE-13103 [ergonomics] add region size balancing as a feature of master
(antonov: rev 5d1603f7591d22c212c2869d4cc820790a0a2f11)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/SimpleRegionNormalizer.java
* hbase-common/src/main/resources/hbase-default.xml
* hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/EmptyNormalizationPlan.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerFactory.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/RegionNormalizerChore.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/SplitNormalizationPlan.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizerOnCluster.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizer.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/NormalizationPlan.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/RegionNormalizer.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/normalizer/MergeNormalizationPlan.java
> [ergonomics] add region size balancing as a feature of master
> -------------------------------------------------------------
>
> Key: HBASE-13103
> URL: https://issues.apache.org/jira/browse/HBASE-13103
> Project: HBase
> Issue Type: Improvement
> Components: Balancer, Usability
> Reporter: Nick Dimiduk
> Assignee: Mikhail Antonov
> Fix For: 1.2.0
>
> Attachments: HBASE-13103-branch-1.v3.patch, HBASE-13103-v0.patch,
> HBASE-13103-v1.patch, HBASE-13103-v2.patch, HBASE-13103-v3.patch
>
>
> Often enough, folks miss-judge split points or otherwise end up with a
> suboptimal number of regions. We should have an automated, reliable way to
> "reshape" or "balance" a table's region boundaries. This would be for tables
> that contain existing data. This might look like:
> {noformat}
> Admin#reshapeTable(TableName, int numSplits);
> {noformat}
> or from the shell:
> {noformat}
> > reshape TABLE, numSplits
> {noformat}
> Better still would be to have a maintenance process, similar to the existing
> Balancer that runs AssignmentManager on an interval, to run the above
> "reshape" operation on an interval. That way, the cluster will automatically
> self-correct toward a desirable state.
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