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https://issues.apache.org/jira/browse/HBASE-21035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-21035:
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Status: In Progress (was: Patch Available)
> Meta Table should be able to online even if all procedures are lost
> -------------------------------------------------------------------
>
> Key: HBASE-21035
> URL: https://issues.apache.org/jira/browse/HBASE-21035
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.1.0
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Major
> Attachments: HBASE-21035.branch-2.0.001.patch
>
>
> After HBASE-20708, we changed the way we init after master starts. It will
> only check WAL dirs and compare to Zookeeper RS nodes to decide which server
> need to expire. For servers which's dir is ending with 'SPLITTING', we assure
> that there will be a SCP for it.
> But, if the server with the meta region crashed before master restarts, and
> if all the procedure wals are lost (due to bug, or deleted manually,
> whatever), the new restarted master will be stuck when initing. Since no one
> will bring meta region online.
> Although it is an anomaly case, but I think no matter what happens, we need
> to online meta region. Otherwise, we are sitting ducks, noting can be done.
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