Duo Zhang created HBASE-20066:
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Summary: Region sequence id may go backward after split or merge
Key: HBASE-20066
URL: https://issues.apache.org/jira/browse/HBASE-20066
Project: HBase
Issue Type: Bug
Reporter: Duo Zhang
The problem is that, now we have markers which will be written to WAL but not
in store file. For a normal region close, we will write a sequence id file
under the region directory, and when opening we will use this as the open
sequence id. But for split and merge, we do not copy the sequence id file to
the newly generated regions so the sequence id may go backwards since when
closing the region we will write flush marker and close marker into WAL...
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