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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3922) 0.22 and 0.23 namenode throws away blocks under construction on restart
Date Tue, 11 Sep 2012 23:32:07 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Suresh Srinivas updated HDFS-3922:

    Fix Version/s:     (was: 0.23.4)
                       (was: 0.22.1)

Kihwal, I just reset Fix Version/s field. It is set when a fix is committed to a branch with
the corresponding release number.

If you intend it for certain releases, add those release numbers to Target Version/s field.
> 0.22 and 0.23 namenode throws away blocks under construction on restart
> -----------------------------------------------------------------------
>                 Key: HDFS-3922
>                 URL: https://issues.apache.org/jira/browse/HDFS-3922
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions:, 0.22.1
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
> When reading edits on startup, namenode may throw away blocks under construction. This
is because the file inode is turned into a "under construction" one, but nothing is done to
the last block. 
> With append/hsync, this is not acceptable because it may drop sync'ed partial blocks.
 In branch 2 and trunk, HDFS-1623 (HA) fixed this issue.

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