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Ismael Juma commented on KAFKA-10060: ------------------------------------- Thanks for the JIRA. I think the expired offsets one can be removed if there are no offsets to expire. Others require careful analysis. Some of them could be useful when analyzing group rebalancing behavior. > Kafka is logging too verbosely at the INFO level > ------------------------------------------------ > > Key: KAFKA-10060 > URL: https://issues.apache.org/jira/browse/KAFKA-10060 > Project: Kafka > Issue Type: Bug > Components: logging > Affects Versions: 2.1.0 > Reporter: Greg Hamilton > Priority: Major > > Some of the INFO level log4j entries are quite verbose and not really useful, > for example in kafka.coordinator.group.GroupMetadataManager, the following > log can be constantly printed with 0 expired offsets: > > {code:java} > info(s"Removed $numOffsetsRemoved expired offsets in ${time.milliseconds() - > currentTimestamp} milliseconds."){code} > > > *Other examples include:* > kafka.coordinator.group.GroupMetadataManager.GroupCoordinator: > > {code:java} > info(s"Group ${group.groupId} with generation ${group.generationId} is now > empty " + > s"(${Topic.GROUP_METADATA_TOPIC_NAME}-${partitionFor(group.groupId)})") > {code} > {code:java} > info(s"Preparing to rebalance group ${group.groupId} in state > ${group.currentState} with old generation " + s"${group.generationId} > (${Topic.GROUP_METADATA_TOPIC_NAME}-${partitionFor(group.groupId)}) (reason: > $reason)") > {code} > {code:java} > info(s"Assignment received from leader for group ${group.groupId} for > generation ${group.generationId}") > {code} > {code:java} > info(s"Stabilized group ${group.groupId} generation ${group.generationId} " + > s"(${Topic.GROUP_METADATA_TOPIC_NAME}-${partitionFor(group.groupId)})") > {code} > > > We should move them to DEBUG if they are expected in normal state. -- This message was sent by Atlassian Jira (v8.3.4#803005)