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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5464) DFSClient does not treat write timeout of 0 properly
Date Sat, 14 Mar 2009 03:52:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681989#action_12681989
] 

Hadoop QA commented on HADOOP-5464:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12401966/HADOOP-5464.patch
  against trunk revision 753449.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/65/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/65/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/65/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-minerva.apache.org/65/console

This message is automatically generated.

> DFSClient does not treat write timeout of 0 properly
> ----------------------------------------------------
>
>                 Key: HADOOP-5464
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5464
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.17.0
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>         Attachments: 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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