Fei Hui created HADOOP-13898:
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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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