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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4657) If incremental BR is received before first full BR NN will log a line for every block on a DN
Date Tue, 16 Jul 2013 19:22:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-4657:
---------------------------------------

    Description: 
If incremental BR is received before first full BR NN will log a line for every block on a
DN.

This can impact restart times pretty substantially if the DNs have a lot of blocks, and since
the FSNS write lock is held while processing the block report clients will not make any progress.

  was:This can impact restart times pretty substantially if the DNs have a lot of blocks,
and since the FSNS write lock is held while processing the block report clients will not make
any progress.

    
> If incremental BR is received before first full BR NN will log a line for every block
on a DN
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4657
>                 URL: https://issues.apache.org/jira/browse/HDFS-4657
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-4657.patch
>
>
> If incremental BR is received before first full BR NN will log a line for every block
on a DN.
> This can impact restart times pretty substantially if the DNs have a lot of blocks, and
since the FSNS write lock is held while processing the block report clients will not make
any progress.

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