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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2346) DataNode should have timeout on socket writes.
Date Tue, 04 Mar 2008 23:21:40 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575189#action_12575189
] 

Hadoop QA commented on HADOOP-2346:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12377113/HADOOP-2346.patch
against trunk revision 619744.

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

    tests included +1.  The patch appears to include 3 new or modified tests.

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

    javac +1.  The applied patch does not generate any new javac compiler warnings.

    release audit +1.  The applied patch does not generate any new release audit warnings.

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

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1892/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1892/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1892/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1892/console

This message is automatically generated.

> DataNode should have timeout on socket writes.
> ----------------------------------------------
>
>                 Key: HADOOP-2346
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2346
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.15.1
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch,
HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch,
HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch,
HADOOP-2346.patch
>
>
> If a client opens a file and stops reading in the middle, DataNode thread writing the
data could be stuck forever. For DataNode sockets we set read timeout but not write timeout.
I think we should add a write(data, timeout) method in IOUtils that assumes it the underlying
FileChannel is non-blocking.

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