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Date: Sat, 10 Sep 2011 01:15:08 +0000 (UTC)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HDFS-1252) TestDFSConcurrentFileOperations broken
 in 0.20-appendj
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     [ https://issues.apache.org/jira/browse/HDFS-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Suresh Srinivas updated HDFS-1252:
----------------------------------

    Attachment: HDFS-1252.20s.1.patch

The test TestDFSConcurrentFileOperations failed because append was not enabled. Enabling append in the test to fix the issue.

> 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-append
>
>         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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