[jira] [Commented] (HADOOP-13351) TestDFSClientSocketSize buffer size tests are flaky

["Mingliang Liu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-13351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366930#comment-15366930 ] 

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

Thanks for reporting this, [~fabbri]. I can remember my adding this UT. I assign this to myself. Feel free to grab it if you have a plan to fix.

> 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: Mingliang Liu
>
> {{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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