[jira] Commented: (HADOOP-6168) HADOOP_HEAPSIZE cannot be done per-server easily

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734759#action_12734759 ] 

Allen Wittenauer commented on HADOOP-6168:
------------------------------------------

So bin/hadoop has this logic:

JAVA_HEAP_MAX=-Xmx1000m

# check envvars which might override default args
if [ "$HADOOP_HEAPSIZE" != "" ]; then
  #echo "run with heapsize $HADOOP_HEAPSIZE"
  JAVA_HEAP_MAX="-Xmx""$HADOOP_HEAPSIZE""m"
  #echo $JAVA_HEAP_MAX
fi


This makes it impossible to create a hadoop-env.sh that is truly generic to all nodes.  It would be better to do this HEAPSIZE management in hadoop-env.sh to allow it to be easily override-able.

> HADOOP_HEAPSIZE cannot be done per-server easily
> ------------------------------------------------
>
>                 Key: HADOOP-6168
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6168
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.18.3
>            Reporter: Allen Wittenauer
>
> The hadoop script forces a heap that cannot be easily overridden if one wants to push the same config everywhere.

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