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https://issues.apache.org/jira/browse/HBASE-9525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang updated HBASE-9525:
-------------------------------
Attachment: trunk-9525.patch
Attached patch to prevent split/merged region from being unassigned.
> "Move" region right after a region split is dangerous
> -----------------------------------------------------
>
> Key: HBASE-9525
> URL: https://issues.apache.org/jira/browse/HBASE-9525
> Project: HBase
> Issue Type: Bug
> Reporter: Devaraj Das
> Assignee: Jimmy Xiang
> Attachments: logs.txt, trunk-9525.patch
>
>
> I ran into a situation where the CM issued a move for a region just after a
> region was split. The master went bonkers since the master honored the CM
> request, and assigned the split region, but subsequently all the region state
> assumptions on this (split)region was messed up. I started seeing log lines
> lines like "THIS SHOULD NOT HAPPEN". Also, it created other problems - a
> compaction on original region happened on the new assignee, and then the
> daughter regions started seeing issues to do with store files missing, etc.,
> etc.
> I will upload the logs shortly.
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