Paolo Patierno created KAFKA-14411:
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Summary: Logging warning when partitions don't exist on assign
request
Key: KAFKA-14411
URL: https://issues.apache.org/jira/browse/KAFKA-14411
Project: Kafka
Issue Type: Improvement
Components: consumer
Reporter: Paolo Patierno
{{When using the assign method on a consumer providing a non existing topic
(and the Kafka cluster has no auto-creation enabled), the log shows messages
like.}}
{code:java}
Subscribed to partition(s): not-existing-topic-1
Error while fetching metadata with correlation id 3 :
{not-existing-topic=UNKNOWN_TOPIC_OR_PARTITION}{code}
{{which could make sense if at some point the user create the topic and the
consumer will be subscribed to it.}}
{{Different is when the topic exists but not the partition requested by the
consumer.}}
{code:java}
Subscribed to partition(s): existing-topic-1 {code}
{{The above message shows that the consumer is subscribed but it will start to
get messages only when the partition will be created as well. Anyway, the log
could be misleading not printing at least a WARNING that the requested
partition doesn't exist.}}
{{So, as we have an error on fetching metadata logged when topic not exist (no
auto-creation enabled), it could be useful to have WARNING messages in the log
about not existing requested partitions.}}
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