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https://issues.apache.org/jira/browse/HDFS-4200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13916232#comment-13916232
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Jing Zhao commented on HDFS-4200:
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+1 for the backport patch. I will commit it soon.
> Reduce the size of synchronized sections in PacketResponder
> ------------------------------------------------------------
>
> Key: HDFS-4200
> URL: https://issues.apache.org/jira/browse/HDFS-4200
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.0.0-alpha
> Reporter: Suresh Srinivas
> Assignee: Andrew Wang
> Fix For: 3.0.0
>
> Attachments: HDFS-4200.patch, HDFS-4200.patch,
> hdfs-4200-branch-2.patch
>
>
> The size of synchronized sections can be reduced in PacketResponder. Also the
> methods in the PacketResponder are long and need refactoring.
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