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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-5464) DFSClient does not treat write timeout of 0 properly
Date Tue, 29 May 2012 17:39:23 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13284954#comment-13284954
] 

Brandon Li commented on HADOOP-5464:
------------------------------------

Tests passed on my laptop with the back porting patch.

                
> DFSClient does not treat write timeout of 0 properly
> ----------------------------------------------------
>
>                 Key: HADOOP-5464
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5464
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.17.0
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5464.branch1.patch, HADOOP-5464.patch
>
>
> {{dfs.datanode.socket.write.timeout}} is used for sockets to and from datanodes. It is
8 minutes by default. Some users set this to 0, effectively disabling the write timeout (for
some specific reasons). 
> When this is set to 0, DFSClient sets the timeout to 5 seconds by mistake while writing
to DataNodes. This is exactly the opposite of real intention of setting it to 0 since 5 seconds
is too short.

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