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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3067) DFSInputStream 'pread' does not close its sockets
Date Thu, 27 Mar 2008 04:21:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12582513#action_12582513
] 

Hadoop QA commented on HADOOP-3067:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12378509/HADOOP-3067.patch
against trunk revision 619744.

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

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

    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/2073/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2073/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2073/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2073/console

This message is automatically generated.

> DFSInputStream 'pread' does not close its sockets
> -------------------------------------------------
>
>                 Key: HADOOP-3067
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3067
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-3067.patch, HADOOP-3067.patch
>
>
> {{DFSInputStream.read(int, buffer)}} does not close the sockets it opens. Main reason
this problem did not show up till now is that pread interface is not used much.
> TestCrcCorruption failure first reported in HADOOP-2902 is caused by this bug. Hadoop
0.17 uses more file descriptors for each thread waiting on socket io. Since client does not
close sockets, it leaves a lot of DataNode threads waiting in the unit test.

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