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Date: Wed, 30 Jun 2010 12:51:52 -0400 (EDT)
From: "Tsz Wo (Nicholas), SZE (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Commented: (HDFS-1258) Clearing namespace quota on "/"
 corrupts FS image
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    [ https://issues.apache.org/jira/browse/HDFS-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12883979#action_12883979 ] 

Tsz Wo (Nicholas), SZE commented on HDFS-1258:
----------------------------------------------

The test report web site is not available at the moment.  Will check it later.

Aaron, could you also provide patches for 0.20 and 0.21?

> Clearing namespace quota on "/" corrupts FS image
> -------------------------------------------------
>
>                 Key: HDFS-1258
>                 URL: https://issues.apache.org/jira/browse/HDFS-1258
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>            Priority: Blocker
>             Fix For: 0.20.3, 0.21.0, 0.22.0
>
>         Attachments: clear-quota.patch, clear-quota.patch
>
>
> The HDFS root directory starts out with a default namespace quota of Integer.MAX_VALUE. If you clear this quota (using "hadoop dfsadmin -clrQuota /"), the fsimage gets corrupted immediately. Subsequent 2NN rolls will fail, and the NN will not come back up from a restart.

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