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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5558) LeaseManager monitor thread can crash if the last block is complete but another block is not.
Date Mon, 02 Dec 2013 17:34:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836710#comment-13836710
] 

Colin Patrick McCabe commented on HDFS-5558:
--------------------------------------------

Thanks for the explanation.  Using WARN here is fine with me.

> LeaseManager monitor thread can crash if the last block is complete but another block
is not.
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5558
>                 URL: https://issues.apache.org/jira/browse/HDFS-5558
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.23.9, 2.3.0
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-5558.branch-023.patch, HDFS-5558.patch
>
>
> As mentioned in HDFS-5557, if a file has its last and penultimate block not completed
and the file is being closed, the last block may be completed but the penultimate one might
not. If this condition lasts long and the file is abandoned, LeaseManager will try to recover
the lease and the block. But {{internalReleaseLease()}} will fail with invalid cast exception
with this kind of file.



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