Jake Maes created SAMZA-1383:
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             Summary: KafkaCheckpointManager does not propagate the cause of 
exceptions.
                 Key: SAMZA-1383
                 URL: https://issues.apache.org/jira/browse/SAMZA-1383
             Project: Samza
          Issue Type: Bug
            Reporter: Jake Maes
            Assignee: Jake Maes
             Fix For: 0.14.0


Specifically, when the DifferingSystemStreamPartitionGrouperFactoryValues 
exception is thrown from KafkaCheckpointLogKey, it gets wrapped in a 
SamzaException with a generic message. Then, only the generic message is 
printed by the warn() log on line 270 of KafkaCheckpointManager.

It should either pass the throwable to the warn() method or do a better job of 
reporting the root cause exception.



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