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https://issues.apache.org/jira/browse/HBASE-16910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16720735#comment-16720735
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Hudson commented on HBASE-16910:
--------------------------------
SUCCESS: Integrated in Jenkins build HBase-1.3-IT #509 (See
[https://builds.apache.org/job/HBase-1.3-IT/509/])
HBASE-16910 Avoid NPE when starting StochasticLoadBalancer (apurtell: rev
0759fb16439d9661193bad6097a32fa4cb549fa7)
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
> Avoid NPE when starting StochasticLoadBalancer
> ----------------------------------------------
>
> Key: HBASE-16910
> URL: https://issues.apache.org/jira/browse/HBASE-16910
> Project: HBase
> Issue Type: Bug
> Components: Balancer
> Affects Versions: 2.0.0
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Priority: Minor
> Fix For: 1.4.0, 1.3.3, 2.0.0
>
> Attachments: HBASE-16910-branch-1.patch, HBASE-16910-v1.patch,
> HBASE-16910.patch
>
>
> When master start, it initialize StochasticLoadBalancer.
> {code}
> this.balancer.setClusterStatus(getClusterStatus());
> this.balancer.setMasterServices(this);
> {code}
> It first setClusterStatus(), then setMasterService(). But in setClusterStatus
> method, it use master service which is not initialized. So it will throw NPE.
> {code}
> int tablesCount = isByTable ? services.getTableDescriptors().getAll().size()
> : 1;
> {code}
> It happens when set isByTable is ture.
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