Jonathan Hsieh created HBASE-8459:
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Summary: make online region snapshotting based on region names
instead of region server names
Key: HBASE-8459
URL: https://issues.apache.org/jira/browse/HBASE-8459
Project: HBase
Issue Type: Bug
Components: snapshots
Affects Versions: 0.95.0, 0.94.6.1
Reporter: Jonathan Hsieh
Currently, online snapshots assign work by region server. This works when
regionseveers do not fail or moved regions. In 0.95+, the table locks prevent
moves while snapshotting is in progress but a failed RS during a snapshot may
still fail in the verification step. This is because the failure would trigger
an assignment which may occur after the work for the regionserver is
determined, leaving some regions unsnapshotted, thus leaving it to fail in the
verification step.
If we instead assigned snapshotting work by region name, a moved region could
be snapshotted by the newly assigned region.
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