Allan Yang created HBASE-21035:
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Summary: 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
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 a 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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