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https://reviews.apache.org/r/50095/
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Review request for Ambari, Alejandro Fernandez and Sumit Mohanty.


Bugs: AMBARI-17751
    https://issues.apache.org/jira/browse/AMBARI-17751


Repository: ambari


Description
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Fix the logic of size calculation while dealing with multi-level YARN queue for 
LLAP config calculations. 
- Earlier, were not taking into account the percentage capacity allocated for 
each parent queue of which the leaf queue is part of. 
- Added fix fir it.  

Added validation check for 'hive.server2.tez.sessions.per.default.queue'.
- If 'hive.server2.tez.sessions.per.default.queue' (tez session) are consuming 
more than 50% of available capacity of LLAP queue, validation check is done.


Diffs
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  ambari-server/src/main/resources/stacks/HDP/2.5/services/stack_advisor.py 
7414925 
  
ambari-server/src/test/python/stacks/2.5/common/services-normal-his-2-hosts.json
 b78619b 
  ambari-server/src/test/python/stacks/2.5/common/test_stack_advisor.py 3fda6e6 

Diff: https://reviews.apache.org/r/50095/diff/


Testing
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Added Python UT
- Python UT passes.


Thanks,

Swapan Shridhar

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