[89-fb] Scan unassigned region directory on master failover
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Key: HBASE-5344
URL: https://issues.apache.org/jira/browse/HBASE-5344
Project: HBase
Issue Type: Bug
Reporter: Mikhail Bautin
Assignee: Mikhail Bautin
In case the master dies after a regionserver writes region state as OPENED or
CLOSED in ZK but before the update is received by master and written to meta,
the new master that comes up has to pick up the region state from ZK and write
it to meta. Otherwise we can get multiply-assigned regions.
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