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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6391) Classpath should not be part of command line arguments
Date Wed, 25 Nov 2009 16:31:40 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782488#action_12782488
] 

Hadoop QA commented on HADOOP-6391:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12426117/HADOOP-6391.patch
  against trunk revision 883206.

    +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 new tests are needed for this patch.
                        Also please list what manual steps were performed to verify 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 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-h4.grid.sp2.yahoo.net/147/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/147/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/147/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/147/console

This message is automatically generated.

> Classpath should not be part of command line arguments
> ------------------------------------------------------
>
>                 Key: HADOOP-6391
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6391
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Cristian Ivascu
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: HADOOP-6391.patch
>
>
> Because bin/hadoop and bin/hdfs put the entire CLASSPATH in the command line arguments,
it exceeds 4096 bytes, which is the maximum size that ps (or /proc) can work with. This makes
looking for the processes difficult, since the output gets truncated for all components at
the same point (e.g. NameNode, SecondaryNameNode, DataNode). 
> The mapred sub-project does not have this problem, because it calls "export CLASSPATH"
before the final exec. bin/hadoop and bin/hdfs should do the same thing

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