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https://issues.apache.org/jira/browse/HBASE-21039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16587385#comment-16587385
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Allan Yang commented on HBASE-21039:
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Found this too, uploaded a patch to fix it, [~Apache9]
> Procedure worker should not quit when getting unexpected error
> --------------------------------------------------------------
>
> Key: HBASE-21039
> URL: https://issues.apache.org/jira/browse/HBASE-21039
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Assignee: Allan Yang
> Priority: Major
> Attachments: HBASE-21039.branch-2.0.001.patch
>
>
> Since for either the old RTP or the new TRSP introduced in HBASE-20881, we
> could end with FAILED_OPEN and set the procedure as failure, it is possible
> that we will call rollback for procedures which can not be rollbacked, and
> throw UnsupportedOperationException.
> Before we find out a way to deal with this, I think at least we should make
> the Procedure worker does not quit when getting these errors, as for the core
> workers there is no way to get them back...
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