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https://issues.apache.org/jira/browse/HBASE-22440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16843093#comment-16843093
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Duo Zhang commented on HBASE-22440:
-----------------------------------
Maybe it is better to override this method in HMaster?
> HRegionServer#getWalGroupsReplicationStatus() throws NPE
> --------------------------------------------------------
>
> Key: HBASE-22440
> URL: https://issues.apache.org/jira/browse/HBASE-22440
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.1.4
> Reporter: puleya7
> Assignee: puleya7
> Priority: Major
> Attachments: HBASE-22440.branch-1.001.patch,
> HBASE-22440.branch-2.patch, HBASE-22440.master.patch
>
>
> Precondition:
> hbase.balancer.tablesOnMaster = true
> hbase.balancer.tablesOnMaster.systemTablesOnly = true
>
> Open the rs page of the master throws NullPointException, because
> replicationSourceHandler never initialized.
> HRegionServer#getWalGroupsReplicationStatus() need check [is HMaster && CAN'T
> host user region].
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