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From Jagadish Venkatraman <>
Subject Re: Review Request 45258: Abandon producer retry after a certain # of errors : SAMZA-911
Date Thu, 14 Apr 2016 22:05:19 GMT

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(Updated April 14, 2016, 10:05 p.m.)

Review request for samza, Jake Maes, Navina Ramesh, and Yi Pan (Data Infrastructure).

Bugs: SAMZA-911

Repository: samza


Currently, the KafkaSystemProducer's producer loop keeps retrying indefinitely when there
is an exception in the retryBackOff loop. If there are repeated exceptions, then it makes
sense to retry for awhile, and then fail the container.

Long term, we should focus on getting rid off the retryBackOff loop, and close the producer
object in the callback during failure. This will guarantee in-order delivery.

1.Modified the KafkaSystemProducer to take a maxRetries. (currently, its set to 30).
2.Add tests to verify retry in case of RetriableExceptions.


  samza-kafka/src/main/scala/org/apache/samza/system/kafka/KafkaSystemProducer.scala 9a44d46d29a1997958a9d2bbf7be0bde860fff64

  samza-kafka/src/test/scala/org/apache/samza/system/kafka/TestKafkaSystemProducer.scala 39426d8cf64516ec4fdc0cb4ff60b1df3a757470



Added unit tests to verify functionality.


Jagadish Venkatraman

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