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https://issues.apache.org/jira/browse/HBASE-5359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246574#comment-13246574
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Nicolas Spiegelberg commented on HBASE-5359:
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The only worry that I have with this patch is that I have an unconditional
wait. The code should theoretically be fine because the main problem would be
handling a shutdownNow() request. In this case, it should throw an
InterruptException and be released by the finally block that Ted mentions.
However, a bug would cause the RPC thread (and, hence, the RS) to hang and
avoid exiting. That said, adding a time on the wait might end up masking a bug
and cause the shutdown process to appear hacky.
> 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: 0.96.0
>
> 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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