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From "Robert Nettleton" <>
Subject Review Request 30893: Fix NullPointerException during Blueprint Cluster startup
Date Wed, 11 Feb 2015 21:19:44 GMT

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Review request for Ambari, Dmytro Sen, John Speidel, Robert Levas, and Yusaku Sako.

Repository: ambari


This patch resolves AMBARI-9584.

A NullPointerException was thrown during Blueprint configuration
  processing, prior to a cluster startup attempt.

This exception was caused by a new configuration file, introduced
  in AMBARI-9468.  The ams-hbase-security-site.xml configuration
  file includes property names, but no values.  This causes
  an exception in the Blueprint and Cluster configuration

This patch addresses the issue by:

 - Adding empty "<value>" tags to this new configuration file, in
   order to avoid the NullPointerException.  This also brings this
   new configuration file more into line with the other files
   in the stack definitions, since no other file skips <value>
   tags, even if the values are empty.

 - Updates site_properties.js in ambari-web to account for these
   new properties as well, to ensure that the UI can handle these
   properties as expected.  This portion of the patch was contributed
   by Dmitry Sen.


  ambari-web/app/data/HDP2/site_properties.js 2b2294c 



1. Manually verified that single-node and multi-node clusters can be properly started using
a Blueprint, and including the Ambari Metrics Service. 
2. Ran the ambari-server unit tests, and only noticed the expected python failures.


Robert Nettleton

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