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https://issues.apache.org/jira/browse/HDFS-12942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16349692#comment-16349692
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Hudson commented on HDFS-12942:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13603 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13603/])
HDFS-12942. Synchronization issue in FSDataSetImpl#moveBlock. (aengineer: rev
aa45faf0b20c922b0d147ece9fa01fb95a5b0dec)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java
> Synchronization issue in FSDataSetImpl#moveBlock
> ------------------------------------------------
>
> Key: HDFS-12942
> URL: https://issues.apache.org/jira/browse/HDFS-12942
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Ajay Kumar
> Assignee: Ajay Kumar
> Priority: Major
> Fix For: 3.0.1
>
> Attachments: HDFS-12942.001.patch, HDFS-12942.002.patch,
> HDFS-12942.003.patch, HDFS-12942.004.patch, HDFS-12942.005.patch,
> HDFS-12942.006.patch
>
>
> FSDataSetImpl#moveBlock works in following following 3 steps:
> # first creates a new replicaInfo object
> # calls finalizeReplica to finalize it.
> # Calls removeOldReplica to remove oldReplica.
> A client can potentially append to the old replica between step 1 and 2.
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