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https://issues.apache.org/jira/browse/HBASE-10873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13981485#comment-13981485
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Hudson commented on HBASE-10873:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #5117 (See
[https://builds.apache.org/job/HBase-TRUNK/5117/])
HBASE-10873 Control number of regions assigned to backup masters (jxiang: rev
1590078)
* /hbase/trunk/hbase-common/src/main/resources/hbase-default.xml
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/ClusterLoadState.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredNodeLoadBalancer.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/SimpleLoadBalancer.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestBaseLoadBalancer.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestDefaultLoadBalancer.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancer.java
> Control number of regions assigned to backup masters
> ----------------------------------------------------
>
> Key: HBASE-10873
> URL: https://issues.apache.org/jira/browse/HBASE-10873
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.99.0
>
> Attachments: hbase-10873.patch, hbase-10873_v2.patch,
> hbase-10873_v3.patch
>
>
> By default, a backup master is treated just like another regionserver. So it
> can host as many regions as other regionserver does. When the backup master
> becomes the active one, region balancer needs to move those user regions on
> this master to other region servers. To minimize the impact, it's better not
> to assign too many regions on backup masters. It may not be good to leave the
> backup masters idle and not host any region either.
> We should make this adjustable so that users can control how many regions to
> assign to each backup master.
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