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https://reviews.apache.org/r/47014/
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Review request for Ambari, Daniel Gergely, Laszlo Puskas, Sandor Magyari, 
Srimanth Gunturi, and Sid Wagle.


Bugs: AMBARI-16270
    https://issues.apache.org/jira/browse/AMBARI-16270


Repository: ambari


Description
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When the first host for a host group registers with the cluster and is assigned 
to host group Ambari checks if there is any config group to be created for that 
host group. If it has to than create a config group and assigning to it all 
hosts that are expected for the parent host group. However it not checks is all 
of the expected hosts of the host group have already been associated with the 
cluster thus the config group creation fails as config groups can have only 
hosts added that already are associated with the cluster.

This has been changed to add only those hosts to config group that already have 
been associated with the cluster and update the created config group with the 
remaing hosts as these become available and register with the cluster.


Diffs
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ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java
 cf1a6ac 
  
ambari-server/src/test/java/org/apache/ambari/server/topology/AmbariContextTest.java
 1613d11 

Diff: https://reviews.apache.org/r/47014/diff/


Testing
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Manual testing done.

Unit tests are in progress.


Thanks,

Sebastian Toader

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