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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7463) Simplify FSNamesystem#getBlockLocationsUpdateTimes
Date Fri, 12 Dec 2014 08:46:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14243878#comment-14243878
] 

Haohui Mai commented on HDFS-7463:
----------------------------------

Thanks for the heads up. Filed HDFS-7517 for fixing it.

> Simplify FSNamesystem#getBlockLocationsUpdateTimes
> --------------------------------------------------
>
>                 Key: HDFS-7463
>                 URL: https://issues.apache.org/jira/browse/HDFS-7463
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7463.000.patch, HDFS-7463.001.patch, HDFS-7463.002.patch, HDFS-7463.003.patch,
HDFS-7463.004.patch, HDFS-7463.005.patch, HDFS-7463.006.patch, HDFS-7463.007.patch, HDFS-7463.008.patch,
HDFS-7463.008.patch
>
>
> Currently {{FSNamesystem#getBlockLocationsUpdateTimes}} holds the read lock to access
the blocks. It releases the read lock and then acquires the write lock when it needs to update
the access time of the {{INode}}.
> This jira proposes to move the responsibility of the latter steps to the caller to simplify
the code.



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