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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12641) Backport HDFS-11755 into branch-2.7 to fix a regression in HDFS-11445
Date Mon, 20 Nov 2017 23:21:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16260010#comment-16260010
] 

Wei-Chiu Chuang commented on HDFS-12641:
----------------------------------------

Failed tests are due to jenkins OOM, doesn't appear related. Whitespace warnings are due to
a file unrelated to the patch.
The checkstyle warning needs to be address though.

> Backport HDFS-11755 into branch-2.7 to fix a regression in HDFS-11445
> ---------------------------------------------------------------------
>
>                 Key: HDFS-12641
>                 URL: https://issues.apache.org/jira/browse/HDFS-12641
>             Project: Hadoop HDFS
>          Issue Type: Task
>    Affects Versions: 2.7.4
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>            Priority: Blocker
>              Labels: release-blocker
>         Attachments: HDFS-12641.branch-2.7.001.patch
>
>
> Our internal testing caught a regression in HDFS-11445 when we cherry picked the commit
into CDH. Basically, it produces bogus missing file warnings. Further analysis revealed that
the regression is actually fixed by HDFS-11755.
> Because of the order commits are merged in branch-2.8 ~ trunk (HDFS-11755 was committed
before HDFS-11445), the regression was never actually surfaced for Hadoop 2.8/3.0.0-(alpha/beta)
users. Since branch-2.7 has HDFS-11445 but no HDFS-11755, I suspect the regression is more
visible for Hadoop 2.7.4.
> I am filing this jira to raise more awareness, than simply backporting HDFS-11755 into
branch-2.7.



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