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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/52451/
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(Updated Oct. 3, 2016, 8:16 p.m.)


Review request for Ambari, Alejandro Fernandez and Sumit Mohanty.


Changes
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Updated Description.


Bugs: AMBARI-18508
    https://issues.apache.org/jira/browse/AMBARI-18508


Repository: ambari


Description (updated)
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**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
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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
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- Python UT passes.
- Tested on live cluster.
- Ambari QA pending.


File Attachments
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"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

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