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https://issues.apache.org/jira/browse/HBASE-20087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16377350#comment-16377350
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Andrew Purtell edited comment on HBASE-20087 at 2/26/18 7:04 PM:
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I attached a simple port of the RSGroups hack to the master, as a separate
chore from the AM.
Looking at the AM code, changing the default for
"hbase.assignment.maximum.attempts" to INT_MAX would partly achieve the aim,
and introducing some new logic to revisit all of the assignments tracked with
the failedOpenTracker when a new server comes online would take care of the
rest.
was (Author: apurtell):
I attached a simple port of the RSGroups hack to the master, as a separate
chore from the AM.
I don't think this is the best approach though.
Looking at the AM code, changing the default for
"hbase.assignment.maximum.attempts" to INT_MAX would partly achieve the aim,
and introducing some new logic to revisit all of the assignments tracked with
the failedOpenTracker when a new server comes online would take care of the
rest.
> Periodically attempt redeploy of regions in FAILED_OPEN state
> -------------------------------------------------------------
>
> Key: HBASE-20087
> URL: https://issues.apache.org/jira/browse/HBASE-20087
> Project: HBase
> Issue Type: Improvement
> Components: master, Region Assignment
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Major
> Fix For: 2.0.0, 1.5.0
>
> Attachments:
> 0001-W-4723090-Port-the-RIT-FAILED_OPEN-state-hack-from-R.patch
>
>
> Because RSGroups can cause permanent RIT with regions in FAILED_OPEN state,
> we added logic to the master portion of the RSGroups extention to enumerate
> RITs and retry assignment of regions in FAILED_OPEN state.
> However, this strategy can be applied generally to reduce need of operator
> involvement in cluster operations. Now an operator has to manually resolve
> FAILED_OPEN assignments but there is little risk in automatically retrying
> them after a while. If the reason the assignment failed has not cleared, the
> assignment will just fail again. Should the reason the assignment failed be
> resolved, then operators don't have to do more in order for the cluster to
> fully heal.
>
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