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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6108) make the length of the range in sync_file_range() configurable
Date Wed, 06 May 2015 03:26:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated HDFS-6108:
-----------------------------------
    Labels: BB2015-05-TBR  (was: )

> make the length of the range in sync_file_range() configurable
> --------------------------------------------------------------
>
>                 Key: HDFS-6108
>                 URL: https://issues.apache.org/jira/browse/HDFS-6108
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 3.0.0, 2.3.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-6108-v2.txt, HDFS-6108.txt
>
>
> Current codebase has a hard code value for sync_file_range system call, we'd better to
make it configurable, since different scenario probably has a different/better value for it.
(ps: i found it's 1 * 1024 * 1024 in fb-20 branch)



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