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https://issues.apache.org/jira/browse/HADOOP-6713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12859905#action_12859905
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Koji Noguchi commented on HADOOP-6713:
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Nice. Any performance numbers ?
> The RPC server Listener thread is a scalability bottleneck
> ----------------------------------------------------------
>
> Key: HADOOP-6713
> URL: https://issues.apache.org/jira/browse/HADOOP-6713
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.21.0
> Reporter: dhruba borthakur
> Assignee: Dmytro Molkov
> Attachments: HADOOP-6713.patch
>
>
> The Hadoop RPC Server implementation has a single Listener thread that reads
> data from the socket and puts them into a call queue. This means that this
> single thread can pull RPC requests off the network only as fast as a single
> CPU can execute. This is a scalability bottlneck in our cluster.
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