[
https://issues.apache.org/jira/browse/HBASE-16910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15595090#comment-15595090
]
Matteo Bertozzi commented on HBASE-16910:
-----------------------------------------
shouldn't the balancer initialization stay before the
AssignmentManager.joinCluster()? joinCluster() is already assigning regions.
> Avoid NPE when start 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
> Attachments: 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
