Ben Lau created HBASE-19989:
Summary: READY_TO_MERGE and READY_TO_SPLIT do not update region
Issue Type: Bug
Affects Versions: 1.4.1, 1.3.1
Reporter: Ben Lau
Assignee: Ben Lau
Region state transitions do not work correctly for READY_TO_MERGE/SPLIT.
[~thiruvel] and I noticed this is due to break statements being in the wrong
place in AssignmentManager. This allows a race condition for example in which
one of the regions being merged could be moved concurrently, resulting in the
merge transaction failing and then double assignment and/or dataloss. This bug
appears to only affect branch-1 (for example 1.3 and 1.4) and not branch-2 as
the relevant code in AM has since been rewritten.
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