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From "Todd Lipcon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-1252) TestDFSConcurrentFileOperations broken in 0.20-appendj
Date Mon, 03 Oct 2011 21:54:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HDFS-1252.
-------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 0.20-append)
                   0.20.205.0
     Hadoop Flags: Reviewed

Suresh committed this to 0.20.205
                
> TestDFSConcurrentFileOperations broken in 0.20-appendj
> ------------------------------------------------------
>
>                 Key: HDFS-1252
>                 URL: https://issues.apache.org/jira/browse/HDFS-1252
>             Project: Hadoop HDFS
>          Issue Type: Test
>          Components: test
>    Affects Versions: 0.20-append
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.20.205.0
>
>         Attachments: HDFS-1252.20s.1.patch, HDFS-1252.20s.patch, hdfs-1252.txt
>
>
> This test currently has several flaws:
>  - It calls DN.updateBlock with a BlockInfo instance, which then causes java.lang.RuntimeException:
java.lang.NoSuchMethodException: org.apache.hadoop.hdfs.server.namenode.BlocksMap$BlockInfo.<init>()
in the logs when the DN tries to send blockReceived for the block
>  - It assumes that getBlockLocations returns an up-to-date length block after a sync,
which is false. It happens to work because it calls getBlockLocations directly on the NN,
and thus gets a direct reference to the block in the blockmap, which later gets updated
> This patch fixes this test to use the AppendTestUtil functions to intiiate recovery,
and generally pass more reliably.

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