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From "Ankur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2975) IPC server should not allocate a buffer for each request
Date Thu, 05 Jun 2008 05:45:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602548#action_12602548
] 

Ankur commented on HADOOP-2975:
-------------------------------

It sure does. I'll be looking forward to see the results from experiments on large clusters.
It would be great if results could be posted on wiki for everyone to look at.

> 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
>            Assignee: Ankur
>         Attachments: Hadoop-2975-v1.patch, Hadoop-2975-v2.patch, Hadoop-2975-v3.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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