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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13946) Document how HDFS updates timestamps in the FS spec; compare with object stores
Date Tue, 03 Jan 2017 21:12:58 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mingliang Liu updated HADOOP-13946:
-----------------------------------
       Resolution: Cannot Reproduce
     Hadoop Flags: Reviewed
    Fix Version/s: 3.0.0-alpha2
                   2.8.0
           Status: Resolved  (was: Patch Available)

Committed to {{trunk}} through {{branch-2.8}} branches. Thanks for the contribution [~stevel@apache.org].

One trivial changes was that I replaced the two "+" with "*" for list chars following convention
in the markdown file.

> Document how HDFS updates timestamps in the FS spec; compare with object stores
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-13946
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13946
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation, fs
>    Affects Versions: 2.7.3
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HADOOP-13946-001.patch
>
>
> SPARK-17159 shows that the behavior of when HDFS updates timestamps isn't well documented.
Document these in the FS spec.
> I'm not going to add tests for this, as it is so very dependent on FS implementations,
as in "POSIX filesystems may behave differently from HDFS". If someone knows what happens
there, their contribution is welcome.



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