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From "Arpit Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8476) Remove duplicate VM arguments for hadoop deamon
Date Tue, 11 Sep 2012 20:50:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453400#comment-13453400

Arpit Gupta commented on HADOOP-8476:

Vinay could you regenerate the patch, it does not apply on trunk.

Also some comments/questions based on your patch file

You have added an option to the hadoop-config.sh script to skip hadoop opts "--skip_hadoop_opts"
and you are passing that in all the various places hadoop-config.sh is called and this skipping
the setting of HADOOP_OPTS.

I dont think we should make the assumption that people will have the appropriate values set
in the env by the hadoop-env.sh config file. People change this config based on what their
needs are and we cannot force them to have all of these defined. hadoop-config.sh made sure
certain defaults are set.
> Remove duplicate VM arguments for hadoop deamon
> -----------------------------------------------
>                 Key: HADOOP-8476
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8476
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Vinay
>            Assignee: Vinay
>            Priority: Minor
>         Attachments: HADOOP-8476.patch, HADOOP-8476.patch
> remove duplicate VM arguments passed to hadoop daemon
> Following are the VM arguments currently duplicated.
> {noformat}-Dproc_namenode
> -Xmx1000m
> -Djava.net.preferIPv4Stack=true
> -Xmx128m
> -Xmx128m
> -Dhadoop.log.dir=/home/nn2/logs
> -Dhadoop.log.file=hadoop-root-namenode-HOST-xx-xx-xx-105.log
> -Dhadoop.home.dir=/home/nn2/
> -Dhadoop.id.str=root
> -Dhadoop.root.logger=INFO,RFA
> -Dhadoop.policy.file=hadoop-policy.xml
> -Djava.net.preferIPv4Stack=true
> -Dhadoop.security.logger=INFO,RFAS
> -Dhdfs.audit.logger=INFO,NullAppender
> -Dhadoop.security.logger=INFO,RFAS
> -Dhdfs.audit.logger=INFO,NullAppender
> -Dhadoop.security.logger=INFO,RFAS
> -Dhdfs.audit.logger=INFO,NullAppender
> -Dhadoop.security.logger=INFO,RFAS{noformat}
> In above VM argumants -Xmx1000m will be Overridden by -Xmx128m.
> BTW Other duplicate arguments wont harm

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