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-126.96.36.199 for HDP 2.3/2.4.
However, "ambari-server upgrade" does not fix yarn-env, even if the user has
never touched it.
- Install a HDP 2.4.0 cluster with YARN using Ambari 188.8.131.52
- Confirm that yarn-env has *export YARN_HISTORYSERVER_HEAPSIZE=`apptimelineserver_heapsize`* (this is incorrect)
- ambari-server stop
- Install ambari.repo for Ambari 184.108.40.206
- yum upgrade ambari-server
- ambari-server upgrade
- ambari-server start
Actual: yarn-env still has **export
Expected: yarn-env has **export
This means that changing "AppTimelineServer Java heap size" from the UI has no
effect on setting the actual heapsize for ATS.