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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1258) Clearing namespace quota on "/" corrupts FS image
Date Mon, 28 Jun 2010 23:14:51 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aaron T. Myers updated HDFS-1258:

    Attachment: clear-quota.patch

This patch doesn't actually solve the root problem of clearing the root directory quota causing
a corrupt FS image, but it will prevent people from accidentally borking their file system
in the mean time, until that gets fixed.

> 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
>            Priority: Blocker
>             Fix For: 0.20.3, 0.21.0, 0.22.0
>         Attachments: 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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