ShivsundarR opened a new pull request, #20290:
URL: https://github.com/apache/kafka/pull/20290

   *What*
   https://issues.apache.org/jira/browse/KAFKA-19572
   
   - If a `ShareConsumer` constructor failed due to any exception, then we call 
`close()` in the catch block.
   
   - If there were uninitialized members accessed during `close()`, then it 
would throw a NPE. Currently there are no null checks, hence we were attempting 
to use these fields during `close()` execution.
   
   - To avoid this, PR adds null checks in the `close()` function before we 
access fields which possibly could be null.


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