Bart van Deenen created KAFKA-12244:
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Summary: Deleting a topic within metadata.max.idle after last
message floods log with warnings
Key: KAFKA-12244
URL: https://issues.apache.org/jira/browse/KAFKA-12244
Project: Kafka
Issue Type: Improvement
Components: producer
Affects Versions: 2.5.0
Environment: Linux, Confluent 5.5.0
Reporter: Bart van Deenen
In a test we produce to a topic, then stop producing and delete the topic ca.
30 seconds later.
This leads to a flood of WARN messages (ca. 10 per second) after several
minutes that lasts for several minutes.
WARN org.apache.kafka.clients.NetworkClient - [Producer clientId=producer-2]
Error while fetching metadata with correlation id 141 :
\{test-topic=UNKNOWN_TOPIC_OR_PARTITION}
Investigation has shown that the issue can be solved by setting the
metadata.max.idle.ms property to shorter than the interval between stopping
messages and deleting the topic.
The issue itself is not critical, but can lead to a large pollution of your
log, and thereby obscuring (or possibly losing) important messages.
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