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Posted to dev@kafka.apache.org by "Richard Yu (JIRA)" <ji...@apache.org> on 2019/05/26 15:56:00 UTC

[jira] [Created] (KAFKA-8431) Add a onTimeoutExpired callback to Kafka Consumer

Richard Yu created KAFKA-8431:
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             Summary: Add a onTimeoutExpired callback to Kafka Consumer
                 Key: KAFKA-8431
                 URL: https://issues.apache.org/jira/browse/KAFKA-8431
             Project: Kafka
          Issue Type: Improvement
          Components: consumer
            Reporter: Richard Yu


Currently, after the changes introduced in KIP-266, many methods in Kafka Consumer have a bounded execution time given by a user specified {{Duration}} parameter. However, in some cases, some methods could not perform their operations in the allocated timeout. In this case, the user might wish to have a {{onTimeoutExpired}} callback which would be called should a blocking method timeout before any results could be returned. 

The user can implement something like described above, but Kafka can spare the user the necessity of coding such a feature if we can support one by itself.

One possible use of this callback is to retry the method (e.g. the {{onTimeoutExpired}} callback triggers another call to the same method after some allocated time).



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