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From "Dmitry Lysnichenko (JIRA)" <>
Subject [jira] [Created] (AMBARI-10829) YARN heapsize does not take effect
Date Wed, 29 Apr 2015 11:24:05 GMT
Dmitry Lysnichenko created AMBARI-10829:

             Summary: YARN heapsize does not take effect
                 Key: AMBARI-10829
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
            Reporter: Dmitry Lysnichenko
            Assignee: Dmitry Lysnichenko
             Fix For: 2.1.0
         Attachments: AMBARI-10829.patch

There's a parameter called "AppTimelineServer Java heap size" under YARN > Configs.
Changing this does not affect the actual heap size used by AppTimeLineServer.
No matter what the setting is, 1024MB is always used.

This is because the yarn-env template has a bug.
The following line: 
export YARN_HISTORYSERVER_HEAPSIZE={{apptimelineserver_heapsize}}
should be replaced with:
export YARN_TIMELINESERVER_HEAPSIZE={{apptimelineserver_heapsize}}

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