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https://issues.apache.org/jira/browse/HADOOP-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12601531#action_12601531
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Ankur commented on HADOOP-2975:
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This does make sense when we have more than 70 - 80% of request falling below
a certain size. Do we have an idea of what that size is ?
> IPC server should not allocate a buffer for each request
> --------------------------------------------------------
>
> Key: HADOOP-2975
> URL: https://issues.apache.org/jira/browse/HADOOP-2975
> Project: Hadoop Core
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.16.0
> Reporter: Hairong Kuang
> Attachments: Hadoop-2975-v1.patch
>
>
> Currently the IPC server allocates a buffer for each incoming request. The
> buffer is thrown away after the request is serialized. This leads to very
> inefficient heap utilization. It would be nicer if all requests from one
> connection could share a same common buffer since the ipc server has only one
> request is being read from a socket at a time.
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