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Posted to jira@kafka.apache.org by "Rajini Sivaram (Jira)" <ji...@apache.org> on 2021/02/02 12:49:00 UTC

[jira] [Created] (KAFKA-12268) System tests broken because consumer returns early without records

Rajini Sivaram created KAFKA-12268:
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             Summary: System tests broken because consumer returns early without records 
                 Key: KAFKA-12268
                 URL: https://issues.apache.org/jira/browse/KAFKA-12268
             Project: Kafka
          Issue Type: Bug
          Components: consumer
            Reporter: Rajini Sivaram
            Assignee: Rajini Sivaram
             Fix For: 2.8.0


https://issues.apache.org/jira/browse/KAFKA-10866 added metadata to ConsumerRecords. We add metadata even when there are no records. As a result, we sometimes return early from KafkaConsumer#poll() with no records because FetchedRecords.isEmpty returns false if either metadata or records are available. This breaks system tests which rely on poll timeout, expecting records to be returned on every poll when there is no timeout.



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