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https://issues.apache.org/jira/browse/HDFS-12942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16298996#comment-16298996
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Ajay Kumar edited comment on HDFS-12942 at 12/20/17 7:55 PM:
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[~virajith], Thanks for review. Addressed your suggestions in patch v2. Also
addressed checkstyle issues from jenkins.
[~arpitagarwal], thanks for suggestion on cleanup of old replica.
was (Author: ajayydv):
[~virajith], Thanks for review. Addressed your suggestions in patch v2. Also
addressed checkstyle issues from jenkins.
> 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
> Attachments: HDFS-12942.001.patch, HDFS-12942.002.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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