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https://issues.apache.org/jira/browse/HBASE-10209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13855350#comment-13855350
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chunhui shen commented on HBASE-10209:
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The improvement makes sense,
but is there any risk on concurrent assignment,
e.g. Server Shutdown event happen in the same time when assigning.
Wait more body to take a see since I can't think the scenarios about assignment
clearly.
> Speed region assign in failover
> -------------------------------
>
> Key: HBASE-10209
> URL: https://issues.apache.org/jira/browse/HBASE-10209
> Project: HBase
> Issue Type: Improvement
> Components: Region Assignment
> Affects Versions: 0.94.14
> Reporter: binlijin
> Attachments: HBASE-10209-94-2.patch, HBASE-10209-94.patch
>
>
> During master initializate, if there are regionservers shutdown improperly
> previous or start up failed, master will think this is a failover and assign
> regions one by one.
> We have a cluster with 200+ nodes and 32000+regions, it takes 50mins to start
> up all.
> The patch is based on 0.94 branch, and trunk is different now.
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