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https://issues.apache.org/jira/browse/HDFS-2011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060780#comment-13060780
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John George commented on HDFS-2011:
-----------------------------------
If I remember right, it was a case of an "incomplete create" as opposed to
close being called twice. So, the close() was being called on a stream that was
not really created...
> Removal and restoration of storage directories on checkpointing failure
> doesn't work properly
> ---------------------------------------------------------------------------------------------
>
> Key: HDFS-2011
> URL: https://issues.apache.org/jira/browse/HDFS-2011
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Ravi Prakash
> Assignee: Ravi Prakash
> Fix For: 0.23.0
>
> Attachments: HDFS-2011.3.patch, HDFS-2011.4.patch, HDFS-2011.5.patch,
> HDFS-2011.6.patch, HDFS-2011.7.patch, HDFS-2011.8.patch, HDFS-2011.patch,
> HDFS-2011.patch, HDFS-2011.patch
>
>
> Removal and restoration of storage directories on checkpointing failure
> doesn't work properly. Sometimes it throws a NullPointerException and
> sometimes it doesn't take off a failed storage directory
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