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https://issues.apache.org/jira/browse/HBASE-5359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246517#comment-13246517
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Nicolas Spiegelberg commented on HBASE-5359:
--------------------------------------------
Besides focusing on fixing HBASE-5335, I only worked on a solution for
alterTable because alter_status is visibly broken without this, where the user
may never notice the subtle race conditions with the other APIs.
> Alter in the shell can be too quick and return before the table is altered
> --------------------------------------------------------------------------
>
> Key: HBASE-5359
> URL: https://issues.apache.org/jira/browse/HBASE-5359
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.0
> Reporter: Jean-Daniel Cryans
> Fix For: 0.92.2
>
> Attachments: HBASE-5359.patch
>
>
> This seems to be a recent change in behavior but I'm still not sure where
> it's coming from.
> The shell is able to call HMaster.getAlterStatus before the TableEventHandler
> is able call AM.setRegionsToReopen so that the returned status shows no
> pending regions. It means that the alter seems "instantaneous" although it's
> far from completed.
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