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https://issues.apache.org/jira/browse/HDFS-736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HDFS-736:
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Status: Patch Available (was: Open)
> commitBlockSynchronization() should directly update block GS and length.
> ------------------------------------------------------------------------
>
> 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
>
> Attachments: commitBlockSync.patch
>
>
> {{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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