How to debug - NETWORK_EXCEPTION

[Raghav]

Hi

I am sending very small 32 byte message to Kafka broker in a tight loop with 250ms sleep. I have one broker, 1 partition, and replication factor = 1. 

After about 4200 messages, I get following error pasted below.

How can I debug this error ? Can you please throw some ideas for me to debug ? Stuck on this for a while now. Need help here.

17/08/10 04:46:58 WARN internals.Sender:307 Got error produce response with correlation id 4205 on topic-partition topic04-0, retrying (2 attempts left). Error: NETWORK_EXCEPTI

ON

17/08/10 04:47:29 WARN internals.Sender:307 Got error produce response with correlation id 4207 on topic-partition topic04-0, retrying (1 attempts left). Error: NETWORK_EXCEPT$ON

17/08/10 04:47:59 WARN internals.Sender:307 Got error produce response with correlation id 4209 on topic-partition topic04-0, retrying (0 attempts left). Error: NETWORK_EXCEPT$ON

java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.NetworkException: The server disconnected before a response was received.

        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.valueOrError(FutureRecordMetadata.java:65)

        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:52)

        at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:25)

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Raghav

[Saravanan Tirugnanum]

Hi 

Were you able to figure out this issue? Any clue ?

Regards

Saravanan

[Raghav]

I was never able to debug this exception. I, unfortunately, moved to Apache Kafka 10.2.1 from Confluent 3.2.1 and this issue went away.

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Raghav

[Saravanan Tirugnanum]

Thank you Raghav. Was it like you upgraded Kafka Broker or Clients or both.

Regards

Saravanan

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Raghav

[Raghav]

Kafka Brokers only. Clients were Java client that used the same client version as the broker.

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Raghav

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Raghav