[jira] [Created] (AMBARI-15880) ATS heapsize cannot be changed in Ambari-2.2.1.1 or greater post Ambari Server upgrade, even though the bug should be fixed

["Andrew Onischuk (JIRA)" <ji...@apache.org>]

Andrew Onischuk created AMBARI-15880:
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             Summary: ATS heapsize cannot be changed in Ambari-2.2.1.1 or greater post Ambari Server upgrade, even though the bug should be fixed
                 Key: AMBARI-15880
                 URL: https://issues.apache.org/jira/browse/AMBARI-15880
             Project: Ambari
          Issue Type: Bug
            Reporter: Andrew Onischuk
            Assignee: Andrew Onischuk
             Fix For: 2.4.0
         Attachments: AMBARI-15880.patch

yarn-env had an issue where ATS heapsize was not getting set correctly
This was fixed in Ambari-2.1.0 for HDP 2.2 and Ambari-2.2.1.1 for HDP 2.3/2.4.  
However, "ambari-server upgrade" does not fix yarn-env, even if the user has
never touched it.

STR:

  * Install a HDP 2.4.0 cluster with YARN using Ambari 2.2.1.0
  * Confirm that yarn-env has **export YARN_HISTORYSERVER_HEAPSIZE=`apptimelineserver_heapsize`** (this is incorrect)
  * ambari-server stop
  * Install ambari.repo for Ambari 2.2.1.1
  * yum upgrade ambari-server
  * ambari-server upgrade
  * ambari-server start

Actual: yarn-env still has **export
YARN_HISTORYSERVER_HEAPSIZE=`apptimelineserver_heapsize`**  
Expected: yarn-env has **export
YARN_TIMELINESERVER_HEAPSIZE=`apptimelineserver_heapsize`** instead

This means that changing "AppTimelineServer Java heap size" from the UI has no
effect on setting the actual heapsize for ATS.





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