Allan Yang created HBASE-20860:
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Summary: Merged region's RIT state may not be cleaned after master
restart
Key: HBASE-20860
URL: https://issues.apache.org/jira/browse/HBASE-20860
Project: HBase
Issue Type: Bug
Affects Versions: 2.0.1, 3.0.0, 2.1.0
Reporter: Allan Yang
Assignee: Allan Yang
Fix For: 3.0.0, 2.1.0, 2.0.2
In MergeTableRegionsProcedure, we issue UnassignProcedures to offline regions
to merge. But if we restart master just after MergeTableRegionsProcedure
finished these two UnassignProcedure and before it can delete their meta
entries. The new master will found these two region is CLOSED but no procedures
are attached to them. They will be regard as RIT regions and nobody will clean
the RIT state for them later.
A quick way to resolve this stuck situation in the production env is restarting
master again, since the meta entries are deleted in MergeTableRegionsProcedure.
Here, I offer a fix for this problem.
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