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(Updated Oct. 3, 2016, 8:16 p.m.) Review request for Ambari, Alejandro Fernandez and Sumit Mohanty. Changes ------- Updated Description. Bugs: AMBARI-18508 https://issues.apache.org/jira/browse/AMBARI-18508 Repository: ambari Description (updated) ------- **Issue:** LLAP daemons can be killed by the YARN Memory Monitor The following messages in the AM log of LLAP YARN Application. {quote} is running beyond physical memory limits. Current usage: <USED> of <ALLOCATED> GB physical memory used. {quote} **Fix:** Added a configurable option for 'headroom space' with default value as 6G. This option gets used while calculating heap size. - Screenshot attached. Diffs ----- ambari-server/src/main/resources/stacks/HDP/2.5/services/HIVE/configuration/hive-interactive-env.xml b14cc8c ambari-server/src/main/resources/stacks/HDP/2.5/services/stack_advisor.py 2a4728a Diff: https://reviews.apache.org/r/52451/diff/ Testing ------- - Python UT passes. - Tested on live cluster. - Ambari QA pending. File Attachments ---------------- "llap headroom space" on UI. https://reviews.apache.org/media/uploaded/files/2016/10/03/08a70951-a3e9-4327-84a2-579bb40d5d2a__Screen_Shot_2016-10-03_at_12.29.31_PM.png Thanks, Swapan Shridhar