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Date: Tue, 10 Mar 2015 02:49:39 +0000 (UTC)
From: "Tsuyoshi Ozawa (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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 <JIRA.12750304.1414138095635@arcas>
Subject: [jira] [Updated] (HADOOP-11226) ipc.Client has to use
 setTrafficClass() with IPTOS_LOWDELAY|IPTOS_RELIABILITY
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     [ https://issues.apache.org/jira/browse/HADOOP-11226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsuyoshi Ozawa updated HADOOP-11226:
------------------------------------
    Issue Type: Improvement  (was: Bug)

> ipc.Client has to use setTrafficClass() with IPTOS_LOWDELAY|IPTOS_RELIABILITY
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-11226
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11226
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 2.6.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>              Labels: Infiniband
>         Attachments: HADOOP-11226.1.patch, HADOOP-11226.2.patch, HADOOP-11226.3.patch, HADOOP-11226.4.patch, HADOOP-11226.5.patch
>
>
> During heavy shuffle, packet loss for IPC packets was observed from a machine.
> Avoid packet-loss and speed up transfer by using 0x14 QOS bits for the packets.


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