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Posted to dev@kafka.apache.org by "Ben Stopford (JIRA)" <ji...@apache.org> on 2015/11/26 20:05:10 UTC

[jira] [Created] (KAFKA-2900) Error Consuming From Kafka

Ben Stopford created KAFKA-2900:
-----------------------------------

             Summary: Error Consuming From Kafka
                 Key: KAFKA-2900
                 URL: https://issues.apache.org/jira/browse/KAFKA-2900
             Project: Kafka
          Issue Type: Bug
            Reporter: Ben Stopford


More consumer strangeness from the rolling upgrade test. 

Clients dumps out many instances of:

{[2015-11-26 16:03:26,369] WARN Unknown error fetching data for topic-partition test_topic-0 (org.apache.kafka.clients.consumer.internals.Fetcher)}

Corresponding server error is:

{[2015-11-26 16:03:26,483] ERROR [Replica Manager on Broker 1]: Error processing fetch operation on partition [test_topic,2] offset 13529 (kafka.server.ReplicaManager)}

It would appear we don't log the cause of this error (i.e. the exception) so it's a bit tricky working out what happened. I've submitted a patch to improve this (https://issues.apache.org/jira/browse/KAFKA-2899).

The test fails as the consumer stops consuming from this poing




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