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From "Cristian Ivascu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6391) Classpath should not be part of command line arguments
Date Wed, 25 Nov 2009 16:15:39 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Cristian Ivascu updated HADOOP-6391:

    Attachment: HADOOP-6391.patch

> 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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