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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3701) HDFS may miss the final block when reading a file opened for writing if one of the datanode is dead
Date Thu, 09 Aug 2012 14:19:19 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431829#comment-13431829
] 

Uma Maheswara Rao G commented on HDFS-3701:
-------------------------------------------

Hi Nicolas, I really did not get the time to work on it as I was busy in some tasks from last
few days. Hopefully I will get to it on next week or so.
BTW, If you feel urgent and you have time to do it, I would be happy to review it and commint
in some time.
                
> HDFS may miss the final block when reading a file opened for writing if one of the datanode
is dead
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3701
>                 URL: https://issues.apache.org/jira/browse/HDFS-3701
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 1.0.3
>            Reporter: nkeywal
>            Priority: Critical
>
> When the file is opened for writing, the DFSClient calls one of the datanode owning the
last block to get its size. If this datanode is dead, the socket exception is shallowed and
the size of this last block is equals to zero. This seems to be fixed on trunk, but I didn't
find a related Jira. On 1.0.3, it's not fixed. It's on the same area as HDFS-1950 or HDFS-3222.

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