anand-h-codes opened a new pull request, #3691:
URL: https://github.com/apache/storm/pull/3691

   ## What is the purpose of the change
   
   Kafka Consumer object is not thread safe. It must not be passed among 
threads for the purpose of collecting metrics. Instead Kafka Admin client can 
be used.
   
   ## How was the change tested
   
   mvn tests & tested collecting Console Metrics for a Kafka Spout in local 
cluster.


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