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Date: Tue, 3 Jun 2008 23:04:45 -0700 (PDT)
From: "Ankur (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-2975) IPC server should not allocate a
 buffer for each request
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     [ https://issues.apache.org/jira/browse/HADOOP-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ankur updated HADOOP-2975:
--------------------------

    Attachment: Hadoop-2975-v3.patch

> 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, 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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