Deadlock when sarama commit an out of range offset

[aravindvs]

This is a dup of: #121

Reopening this with data here:
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I am reopening this one as I saw a similar behavior:
(1) Producer was producing at a much higher rate than the consumer
(2) Consumer was trying to commit offset which is already deleted.

I was able to log the error message as well by listening on consumer.Errors() channel and got this one:
kafka-consumer : Failed to consume message. Error: kafka: error while consuming topic: kafka server: The requested offset is outside the range of offsets maintained by the server for the given topic/partition.
After this since the pc.Loop() above doesn't refresh, which means we will just be stuck as @plopik mentioned above. I think it will be better to just trigger a rebalance() which should get us out of this situation as mentioned earlier.
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[dim]

@aravindvs can you please test with #169, this should fix you issue once and for all

[aravindvs]

@dim - Thanks! will definitely try it and let you know.

[dim]

Should be fixed, please re-open if you still experience problems