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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10293) StripedFileTestUtil#readAll flaky
Date Fri, 15 Apr 2016 00:14:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15242189#comment-15242189
] 

Mingliang Liu commented on HDFS-10293:
--------------------------------------

I don't see related failing tests.

Still, I'm surprised that we have so many intermittently failing tests. I have not seen a
pre-commit that passes all UT for a while.

> StripedFileTestUtil#readAll flaky
> ---------------------------------
>
>                 Key: HDFS-10293
>                 URL: https://issues.apache.org/jira/browse/HDFS-10293
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding, test
>    Affects Versions: 3.0.0
>            Reporter: Mingliang Liu
>            Assignee: Mingliang Liu
>         Attachments: HDFS-10293.000.patch
>
>
> The flaky test helper method cause several UT test failing intermittently. For example,
the {{TestDFSStripedOutputStreamWithFailure#testAddBlockWhenNoSufficientParityNumOfNodes}}
timed out in a recent run (see [exception|https://builds.apache.org/job/PreCommit-HDFS-Build/15158/testReport/org.apache.hadoop.hdfs/TestDFSStripedOutputStreamWithFailure/testAddBlockWhenNoSufficientParityNumOfNodes/]),
which can be easily reproduced locally.
> Debugging at the code, chances are that the helper method is stuck in an infinite loop.
We need a fix to make the test robust.



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