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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12157) Do fsyncDirectory(..) outside of FSDataset lock
Date Wed, 09 Aug 2017 14:42:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kihwal Lee updated HDFS-12157:
------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 2.7.5
                   2.8.2
                   3.0.0-beta1
                   2.9.0
           Status: Resolved  (was: Patch Available)

I've committed this to trunk, branch-2, branch-2.8, branch-2.8.2 and branch-2.7. Thanks for
working on this Vinay and thanks for reviewing it Brahma.

> Do fsyncDirectory(..) outside of FSDataset lock
> -----------------------------------------------
>
>                 Key: HDFS-12157
>                 URL: https://issues.apache.org/jira/browse/HDFS-12157
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>            Priority: Critical
>             Fix For: 2.9.0, 3.0.0-beta1, 2.8.2, 2.7.5
>
>         Attachments: HDFS-12157-01.patch, HDFS-12157-branch-2-01.patch, HDFS-12157-branch-2.7-01.patch,
HDFS-12157-branch-2.7-01.patch
>
>
> HDFS-5042 introduced fsyncDirectory(..) to save blocks from power failure. 
> Do it outside of FSDataset lock to avoid overall performance degradation if disk takes
more time to sync.



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