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Date: Wed, 4 Apr 2012 00:11:19 +0000 (UTC)
From: "Tsz Wo (Nicholas), SZE (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HDFS-3100) failed to append data
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     [ https://issues.apache.org/jira/browse/HDFS-3100?page=3Dcom.atlassian=
.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE updated HDFS-3100:
-----------------------------------------

    Summary: failed to append data  (was: failed to append data using webhd=
fs)

Revised summary.
               =20
> failed to append data
> ---------------------
>
>                 Key: HDFS-3100
>                 URL: https://issues.apache.org/jira/browse/HDFS-3100
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.24.0, 0.23.1
>            Reporter: Zhanwei.Wang
>            Assignee: Brandon Li
>             Fix For: 2.0.0
>
>         Attachments: HDFS-3100.patch, HDFS-3100.patch, HDFS-3100.patch, H=
DFS-3100.patch, HDFS-3100.patch, hadoop-wangzw-datanode-ubuntu.log, hadoop-=
wangzw-namenode-ubuntu.log, test.sh, testAppend.patch
>
>
> STEP=EF=BC=9A
> 1, deploy a single node hdfs  0.23.1 cluster and configure hdfs as:
> A) enable webhdfs
> B) enable append
> C) disable permissions
> 2, start hdfs
> 3, run the test script as attached
> RESULT:
> expected: a file named testFile should be created and populated with 32K =
* 5000 zeros, HDFS should be OK.
> I got: script cannot be finished, file has been created but not be popula=
ted as expected, actually append operation failed.
> Datanode log shows that, blockscaner report a bad replica and nanenode de=
cide to delete it. Since it is a single node cluster, append fail. It makes=
 no sense that the script failed every time.
> Datanode and Namenode logs are attached.

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