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