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https://issues.apache.org/jira/browse/HBASE-18984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16211714#comment-16211714
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Yi Liang commented on HBASE-18984:
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{quote} 2. UnAssignProcedure run first, this region will be assigned as OPEN.
=> wrong {quote}
Just check the code, above situation could happen, because
HMaster#startProcedureExecutor runs before AssignmentManager#joinCluster(),.
in startProcedureExecutor, it will start procedureExector and procedureStore,
and also start to do the actual load of old procedures.
in joinCluster, hbase will do read meta and do bulk assign regions.
I think we can start load of old procedures later until at least meta
recovered. or even after all user regions loaded(so above situation would not
happen). What do you think.
[~stack] [~ram_krish]
> [AMv2] Retain assignment does not work well in AMv2
> ---------------------------------------------------
>
> Key: HBASE-18984
> URL: https://issues.apache.org/jira/browse/HBASE-18984
> Project: HBase
> Issue Type: Bug
> Components: proc-v2
> Affects Versions: 2.0.0
> Reporter: Yi Liang
> Assignee: Yi Liang
> Fix For: 2.0.0
>
> Attachments: HBASE-18984-V1-master.patch, Screen Shot 2017-10-10 at
> 2.24.19 PM.png
>
>
> work on 8.17 Retain assignment in
> https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.epjn9nege80k
> To reproduce this error, in hbase shell:
> createTable t1 --> list_regions 't1' --> disable 't1' ---> enable 't1' -->
> list_reigons 't1' (maybe you need to try enable/disable multiple times)
> See attached images. same region assigned to different region servers
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