Huaxiang Sun created HBASE-27366:
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Summary: split or merge removed region under snapshot
Key: HBASE-27366
URL: https://issues.apache.org/jira/browse/HBASE-27366
Project: HBase
Issue Type: Bug
Components: snapshots
Affects Versions: 2.4.10
Reporter: Huaxiang Sun
We run into snapshot failures for one table with large number of regions. The
event sequence is like the following:
# Snapshot process lists all regions for one table.
# Normalize kicks in to split some regions for the table under snapshot.
# split finishes and major compaction finishes. The parent region is moved to
archive.
# When the Snapshot processes the parent region, it does not exist and
snapshot fails.
Since snapshot process acquires the table lock, but there is no table lock
acquired in split or merge process, they crash into each other.
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