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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3348) TestUrlStreamHandler hangs on LINUX
Date Fri, 09 May 2008 04:18:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595463#action_12595463

Hadoop QA commented on HADOOP-3348:

+1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 654315.

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

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

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

    +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/2433/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2433/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2433/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2433/console

This message is automatically generated.

> TestUrlStreamHandler hangs on LINUX
> -----------------------------------
>                 Key: HADOOP-3348
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3348
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.18.0
>         Environment: LINUX 2.6.9
>            Reporter: lohit vijayarenu
>         Attachments: 3348-2nd-option.patch, Datanode_jstack.txt, HADOOP-3348.patch
> TestUrlStreamHandler sets setURLStreamHandlerFactory as
> {noformat}
> FsUrlStreamHandlerFactory factory =
>         new org.apache.hadoop.fs.FsUrlStreamHandlerFactory();
>     java.net.URL.setURLStreamHandlerFactory(factory);
> {noformat}
> After this, MiniDFSCluster seems to hang while Datanodes tries to register in setNewStorageID,
specifically at
> {noformat}
> rand = SecureRandom.getInstance("SHA1PRNG").nextInt(Integer.MAX_VALUE);
> {noformat}
> jstack output shows that the main thread is stuck in RawLocalFileSystem$LocalFSFileInputStream.read
> (Attaching the jstack)

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