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https://issues.apache.org/jira/browse/HADOOP-13773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622349#comment-15622349
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Fei Hui commented on HADOOP-13773:
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in conf/hadoop-env.sh, 
export HADOOP_CLIENT_OPTS="-Xmx512m $HADOOP_CLIENT_OPTS"

when i set HADOOP_HEAPSIZE ,and run 'hadoop jar ...', jvm args is not work.

i see, in bin/hadoop,
exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS $CLASS "$@"

HADOOP_OPTS is behind JAVA_HEAP_MAX, so HADOOP_HEAPSIZE is not work.

for example i run 'HADOOP_HEAPSIZE=1024 hadoop jar ...' , the java process is 
'java -Xmx1024m ... -Xmx512m...', then Xmx512m is valid, and Xmx1024m is invalid

> wrong HADOOP_CLIENT_OPTS in hadoop-env  on branch-2
> ---------------------------------------------------
>
>                 Key: HADOOP-13773
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13773
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 2.6.1, 2.7.3
>            Reporter: Fei Hui
>             Fix For: 2.8.0, 2.9.0, 2.7.4
>
>




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