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https://issues.apache.org/jira/browse/HDFS-6563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14037416#comment-14037416
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Hudson commented on HDFS-6563:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1806 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1806/])
HDFS-6563. NameNode cannot save fsimage in certain circumstances when snapshots
are in use. Contributed by Aaron T. Myers. (atm:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1603712)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/FileWithSnapshotFeature.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotBlocksMap.java
> NameNode cannot save fsimage in certain circumstances when snapshots are in
> use
> -------------------------------------------------------------------------------
>
> Key: HDFS-6563
> URL: https://issues.apache.org/jira/browse/HDFS-6563
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode, snapshots
> Affects Versions: 2.4.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Priority: Critical
> Fix For: 2.5.0
>
> Attachments: HDFS-6563.patch
>
>
> Checkpoints will start to fail and the NameNode will not be able to manually
> saveNamespace if the following set of steps occurs:
> # A zero-length file appears in a snapshot
> # That file is later lengthened to include at least one block
> # That file is subsequently deleted from the present file system but remains
> in the snapshot
> More details in the first comment.
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