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Posted to hdfs-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2009/10/26 22:44:59 UTC

[jira] Created: (HDFS-736) commitBlockSynchronization() should directly update block GS and length.

commitBlockSynchronization() should directly update block GS and length.
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                 Key: HDFS-736
                 URL: https://issues.apache.org/jira/browse/HDFS-736
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 0.21.0
            Reporter: Konstantin Shvachko
            Assignee: Konstantin Shvachko
             Fix For: 0.21.0


{{FSNamesystem.commitBlockSynchronization()}} updates block's generation stamp and length by first removing the old block instance from blocksMap and then inserting the new instance back. This was necessary when GS was a part of the block key. After HDFS-512 the GS along with the block length can be updated directly in the blocksMap entry.

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