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https://issues.apache.org/jira/browse/HDFS-6948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14142068#comment-14142068
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Hudson commented on HDFS-6948:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1902 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1902/])
HDFS-6948. DN rejects blocks if it has older UC block. Contributed by (kihwal:
rev f02d934fedf00f0ce43d6f3f9b06d89ccc6851a5)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestWriteToReplica.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> DN rejects blocks if it has older UC block
> ------------------------------------------
>
> Key: HDFS-6948
> URL: https://issues.apache.org/jira/browse/HDFS-6948
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Assignee: Eric Payne
> Fix For: 2.6.0
>
> Attachments: HDFS-6948.201409052147.txt, HDFS-6948.201409081817.txt,
> HDFS-6948.201409101802.txt
>
>
> DNs appear to always reject blocks, even with newer genstamps, if it already
> has a UC copy in its tmp dir.
> {noformat}ReplicaAlreadyExistsException: Block
> XXX already
> exists in state TEMPORARY and thus cannot be created{noformat}
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