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From "Liyin Tang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7267) [89-fb] Only create the dummy hfile for the compaction if necessary.
Date Tue, 04 Dec 2012 01:43:58 GMT
Liyin Tang created HBASE-7267:
---------------------------------

             Summary: [89-fb] Only create the dummy hfile for the compaction if necessary.
                 Key: HBASE-7267
                 URL: https://issues.apache.org/jira/browse/HBASE-7267
             Project: HBase
          Issue Type: Bug
            Reporter: Liyin Tang


In HBASE-6059, it introduced a new behavior that the compaction would create the HFileWriter
no mater whether there is any key/value as the output or not. This new behavior actually is
conflicts with HBASE-5199 (Delete out of TTL store files before compaction selection) so that
compacting the expired hfiles would generate one more expired hfiles.

Actually we only needs to create the dummy hfile iff the maxSequenceID among the compaction
candidates is equal the the maxSequenceID among all the on-disk hfiles. 

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