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https://issues.apache.org/jira/browse/HBASE-18362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094093#comment-16094093
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huaxiang sun commented on HBASE-18362:
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One possibility I can find is that when -fixSplitParents is set, hbck could
reset replica region split parent and this will create a put with replica
region as key in meta table. Please see the following line of code. When
resetSplitParent() is called against replica split parent region, the issue
could happen.
https://github.com/apache/hbase/blob/branch-1.2/hbase-server/src/main/java/org/apache/hadoop/hbase/util/HBaseFsck.java#L2297
I will investigate/test more to see if it is possible.
> Investigate why replica region shows up as key in meta table
> ------------------------------------------------------------
>
> Key: HBASE-18362
> URL: https://issues.apache.org/jira/browse/HBASE-18362
> Project: HBase
> Issue Type: Bug
> Components: hbck
> Affects Versions: 1.4.0, 2.0.0-alpha-1
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Priority: Minor
>
> As described in HBASE-18247, replica region shows up as key in meta table. We
> need to find out the code/logic introducing the issue. I suspected that it
> was introduced by hbck, but last round of code review did not find anything.
> Create jira to track this effort.
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