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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13351) TestDFSClientSocketSize buffer size tests are flaky
Date Thu, 14 Jul 2016 21:52:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378455#comment-15378455
] 

Mingliang Liu commented on HADOOP-13351:
----------------------------------------

Thanks [~ajisakaa] for the review and commit, thanks [~fabbri] for working on this.

> TestDFSClientSocketSize buffer size tests are flaky
> ---------------------------------------------------
>
>                 Key: HADOOP-13351
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13351
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>            Reporter: Aaron Fabbri
>            Assignee: Aaron Fabbri
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-13351.005.patch, HADOOP-13351.006.patch, HADOOP-13351.007.patch,
HADOOP-13551.001.patch, HADOOP-13551.002.patch, HADOOP-13551.003.patch, HADOOP-13551.004.patch
>
>
> {{TestDFSClientSocketSize}} has two tests that assert that a value that was set via {{java.net.Socket#setSendBufferSize}}
is equal to the value subsequently returned by {{java.net.Socket#getSendBufferSize}}.
> These tests are flaky when we run them. The occasionally fail.
> This is expected behavior, actually, because {{Socket#setSendBufferSize()}}[is only a
hint|https://docs.oracle.com/javase/7/docs/api/java/net/Socket.html#setSendBufferSize(int)].
 (Similar to how the underlying libc {{setsockopt(SO_SNDBUF)}} works).



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