Santosh S created KAFKA-7926:
--------------------------------
Summary: Issue with Kafka Broker - UnknownServerException
Key: KAFKA-7926
URL: https://issues.apache.org/jira/browse/KAFKA-7926
Project: Kafka
Issue Type: Bug
Components: core
Environment: production
Reporter: Santosh S
Our application uses `springBootVersion = 2.0.4.RELEASE` along with
`compile('io.projectreactor.kafka:reactor-kafka:1.0.1.RELEASE')` dependency.
The Kafka Broker that we have is at version `1.0.1`.
Intermittently when we send the messages onto Kafka by creating
`reactor.kafka.sender.SenderRecord` and in response of Kafka when look for
`reactor.kafka.sender.SenderResult.exception()` we have
`java.lang.RuntimeException:
org.apache.kafka.common.errors.UnknownServerException: The server experienced
an unexpected error when processing the request` populated in the exception.
Upon retrying couple of times, the messages get through successfully.
On the broker logs the below error is being printed multiple times without any
stacktrace
`[2019-02-08 15:43:07,501] ERROR [ReplicaManager broker=3] Error processing
append operation on partition price-promotions-local-event-0
(kafka.server.ReplicaManager)
`
where `price-promotions-local-event` is our topic.
I have looked online but there is no definitive resolution or ways to triage
this issue, many thanks in advance for any help.
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