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https://issues.apache.org/jira/browse/HDFS-2281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098838#comment-13098838
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Hudson commented on HDFS-2281:
------------------------------
Integrated in Hadoop-Hdfs-22-branch #82 (See
[https://builds.apache.org/job/Hadoop-Hdfs-22-branch/82/])
HDFS-2281. NPE in checkpoint during processIOError(). Contributed by Uma
Maheswara Rao G.
shv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1165943
Files :
* /hadoop/common/branches/branch-0.22/hdfs/CHANGES.txt
*
/hadoop/common/branches/branch-0.22/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileOutputStream.java
*
/hadoop/common/branches/branch-0.22/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java
*
/hadoop/common/branches/branch-0.22/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/namenode/TestCheckpoint.java
> NPE in checkpoint during processIOError()
> -----------------------------------------
>
> Key: HDFS-2281
> URL: https://issues.apache.org/jira/browse/HDFS-2281
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Konstantin Shvachko
> Assignee: Uma Maheswara Rao G
> Fix For: 0.22.0
>
> Attachments: BN-bug-NPE.txt, HDFS-2281.1.patch, HDFS-2281.patch
>
>
> At the end of checkpoint BackupNode tries to convergeJournalSpool() and calls
> revertFileStreams(). The latter closes each file stream, and tries to rename
> the corresponding file to its permanent location current/edits. If for any
> reason the rename fails processIOError() is called for failed streams.
> processIOError() will try to close the stream again and will get NPE in
> EditLogFileOutputStream.close() because bufCurrent was set to null by the
> previous close.
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