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From "Fei Hui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-13898) should set HADOOP_JOB_HISTORYSERVER_HEAPSIZE only if it's empty
Date Tue, 13 Dec 2016 02:45:59 GMT
Fei Hui created HADOOP-13898:
--------------------------------

             Summary: should set HADOOP_JOB_HISTORYSERVER_HEAPSIZE only if it's empty
                 Key: HADOOP-13898
                 URL: https://issues.apache.org/jira/browse/HADOOP-13898
             Project: Hadoop Common
          Issue Type: Bug
          Components: scripts
    Affects Versions: 2.9.0
            Reporter: Fei Hui


In mapred-env, set HADOOP_JOB_HISTORYSERVER_HEAPSIZE 1000 by default, That is incorrect.
We should set it 1000 by default only if it's empty. 
Because if you run  'HADOOP_JOB_HISTORYSERVER_HEAPSIZE =512 $HADOOP_HOME/sbin/mr-jobhistory-daemon.sh
start historyserver', HADOOP_JOB_HISTORYSERVER_HEAPSIZE  will be set 1000, rather than 512.



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