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https://issues.apache.org/jira/browse/HDFS-4627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612613#comment-13612613
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Hudson commented on HDFS-4627:
------------------------------
Integrated in Hadoop-Hdfs-Snapshots-Branch-build #140 (See
[https://builds.apache.org/job/Hadoop-Hdfs-Snapshots-Branch-build/140/])
HDFS-4627. Fix FSImageFormat#Loader NPE and synchronization issues.
Contributed by Jing Zhao. (Revision 1460389)
Result = FAILURE
suresh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1460389
Files :
*
/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-2802.txt
*
/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
*
/hadoop/common/branches/HDFS-2802/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSImageWithSnapshot.java
> Fix FSImageFormat#Loader NPE and synchronization issues
> -------------------------------------------------------
>
> Key: HDFS-4627
> URL: https://issues.apache.org/jira/browse/HDFS-4627
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Fix For: Snapshot (HDFS-2802)
>
> Attachments: HDFS-4627.001.patch, HDFS-4627.002.patch
>
>
> 1. Currently FSImageFormat#Loader#loadFilesUnderConstruction calls
> FSDirectory#unprotectedReplaceINodeFile without acquiring FSDirectory's lock.
> FSDirectory#replaceINodeFile should be called instead.
> 2. Currently FSImage#Loader#loadINode does not create block[] object (i.e.,
> keep it as null) when the length of the block is 0. This will cause NPE when
> the loaded INodeFile is empty, and then an append operation on this inode is
> applied from edit log.
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