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https://issues.apache.org/jira/browse/HADOOP-11081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14138140#comment-14138140
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Allen Wittenauer commented on HADOOP-11081:
-------------------------------------------
{code}
#
# NOTE: HADOOP_GC_SETTINGS is not used by default! This is
# an example of how to define variables and re-use them later on.
# For example, it is common to use the same garbage collection settings
# for all the daemons. So one could define:
#
# export HADOOP_GC_SETTINGS="-verbose:gc -XX:+PrintGCDetails
-XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps"
#
# .. and then use it as per the b option under the namenode.
{code}
better?
> Document hadoop properties expected to be set by the shell code in *-env.sh
> ---------------------------------------------------------------------------
>
> Key: HADOOP-11081
> URL: https://issues.apache.org/jira/browse/HADOOP-11081
> Project: Hadoop Common
> Issue Type: Improvement
> Components: documentation, scripts
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Labels: newbie
> Attachments: HADOOP-11081-01.patch, HADOOP-11081-02.patch,
> HADOOP-11081.patch
>
>
> There are quite a few Java properties that are expected to be set by the
> shell code. These are currently undocumented.
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