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Date: Thu, 19 May 2011 22:35:47 +0000 (UTC)
From: "Jitendra Nath Pandey (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-1371) One bad node can incorrectly flag
 many files as corrupt
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    [ https://issues.apache.org/jira/browse/HDFS-1371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036542#comment-13036542 ] 

Jitendra Nath Pandey commented on HDFS-1371:
--------------------------------------------

I have committed this. Thanks to Tanping!

> One bad node can incorrectly flag many files as corrupt
> -------------------------------------------------------
>
>                 Key: HDFS-1371
>                 URL: https://issues.apache.org/jira/browse/HDFS-1371
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client, name-node
>    Affects Versions: 0.20.1, 0.23.0
>         Environment: yahoo internal version 
> [knoguchi@gwgd4003 ~]$ hadoop version
> Hadoop 0.20.104.3.1007030707
>            Reporter: Koji Noguchi
>            Assignee: Tanping Wang
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1371.04252011.patch, HDFS-1371.0503.patch, HDFS-1371.0513.patch, HDFS-1371.0515.patch, HDFS-1371.0517.2.patch, HDFS-1371.0517.patch, HDFS-1371.0518.2.patch, HDFS-1371.0518.patch
>
>
> On our cluster, 12 files were reported as corrupt by fsck even though the replicas on the datanodes were healthy.
> Turns out that all the replicas (12 files x 3 replicas per file) were reported corrupt from one node.
> Surprisingly, these files were still readable/accessible from dfsclient (-get/-cat) without any problems.

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