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Posted to common-issues@hadoop.apache.org by "Paul Han (JIRA)" <ji...@apache.org> on 2013/06/06 03:01:05 UTC

[jira] [Commented] (HADOOP-9625) HADOOP_OPTS not picked up by hadoop command

    [ https://issues.apache.org/jira/browse/HADOOP-9625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13676550#comment-13676550 ] 

Paul Han commented on HADOOP-9625:
----------------------------------

The fix is straight forward in hadoop-env.sh:
export HADOOP_OPTS="$HADOOP_OPTS -Djava.net.preferIPv4Stack=true $HADOOP_CLIENT_OPTS"
It worked well for our internal customer in twitter.

I'll submit the patch as well. Please review.
                
> HADOOP_OPTS not picked up by hadoop command
> -------------------------------------------
>
>                 Key: HADOOP-9625
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9625
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: bin, conf
>    Affects Versions: 2.0.3-alpha, 2.0.4-alpha
>            Reporter: Paul Han
>            Priority: Minor
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> When migrating from hadoop 1 to hadoop 2, one thing caused our users grief are those non-backward-compatible changes. This JIRA is to fix one of those changes:
>   HADOOP_OPTS is not picked up any more by hadoop command
> With Hadoop 1, HADOOP_OPTS will be picked up by hadoop command. With Hadoop 2, HADOOP_OPTS will be overwritten by the line in conf/hadoop_env.sh :
> export HADOOP_OPTS="-Djava.net.preferIPv4Stack=true"
> We should fix this.

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