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From "Todd Lipcon (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2773) HA: reading edit logs from an earlier version leaves blocks in under-construction state
Date Tue, 10 Jan 2012 01:15:39 GMT
HA: reading edit logs from an earlier version leaves blocks in under-construction state
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                 Key: HDFS-2773
                 URL: https://issues.apache.org/jira/browse/HDFS-2773
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha, name-node
    Affects Versions: HA branch (HDFS-1623)
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
            Priority: Blocker


In HDFS-2602, the code for applying OP_ADD and OP_CLOSE was changed a bit, and the new code
has the following problem: if an OP_CLOSE includes new blocks (ie not previously seen in an
OP_ADD) then those blocks will remain in the "under construction" state rather than being
marked "complete". This is because {{updateBlocks}} always creates {{BlockInfoUnderConstruction}}
regardless of the opcode. This bug only affects the upgrade path, since in trunk we always
persist blocks with OP_ADDs before we call OP_CLOSE.

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