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https://issues.apache.org/jira/browse/HBASE-20087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-20087:
-----------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: (was: 1.4.3)
Release Note: The AssignmentManager will attempt to assign regions in
FAILED_OPEN state at an interval specified by the configuration setting
"hbase.assignment.failed.open.retry.period", defaulting to 300000 (5 minutes).
If a transient condition leads a region to repeatedly fail to open sufficient
to transition into FAILED_OPEN state, such as the temporary inability to
satisfy a RSGroups assignment constraint after server failures, the retries may
automatically redeploy the region without operator intervention. Set to 0 to
disable and keep the old behavior where regions in FAILED_OPEN state are left
to operators to manually reassign.
Status: Resolved (was: Patch Available)
Pushed to branch-1.
If we want something similar like this in AMv2 I could do a forward port.
> 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
> Affects Versions: 1.4.2
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Major
> Fix For: 1.5.0
>
> Attachments:
> 0001-W-4723090-Port-the-RIT-FAILED_OPEN-state-hack-from-R.patch,
> HBASE-20087-branch-1.patch, HBASE-20087-branch-1.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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