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https://reviews.apache.org/r/41312/
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Review request for Ambari and Sumit Mohanty.


Bugs: AMBARI-14355
    https://issues.apache.org/jira/browse/AMBARI-14355


Repository: ambari


Description
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YARN service component is not starting is ECS client component is missing. 
https://issues.apache.org/jira/browse/AMBARI-14355

As part of this JIRA, I have also added a fix to before-START hook to check for 
ECS client component before creating /tmp and /user directory or else the FS 
API will fail


Diffs
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ambari-server/src/main/resources/stacks/HDP/2.0.6/hooks/before-START/scripts/params.py
 23c7489 
  
ambari-server/src/main/resources/stacks/HDP/2.0.6/hooks/before-START/scripts/shared_initialization.py
 1ddd4b4 
  
ambari-server/src/main/resources/stacks/HDP/2.3.ECS/services/YARN/configuration/yarn-site.xml
 PRE-CREATION 
  
ambari-server/src/main/resources/stacks/HDP/2.3.ECS/services/YARN/metainfo.xml 
ee70733 

Diff: https://reviews.apache.org/r/41312/diff/


Testing
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Unit test


Thanks,

Vijay Srinivasaraghavan

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