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https://issues.apache.org/jira/browse/HDFS-12942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16349455#comment-16349455
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Arpit Agarwal edited comment on HDFS-12942 at 2/1/18 11:01 PM:
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Thanks for reviewing and the heads up, [~anu]. I won't be able to review the
updated patch until next week, but if you and [~virajith] are +1 then please go
ahead and commit.
was (Author: arpitagarwal):
Thanks for reviewing and the heads up, [~anu]. I won't be able to review the
updated patch until next week, but if you are +1 then please go ahead and
commit.
> 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
> 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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