[ https://issues.apache.org/jira/browse/KAFKA-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Gustafson reassigned KAFKA-8806: -------------------------------------- Assignee: David Arthur > Kafka.poll spends significant amount of time in > KafkaConsumer.updateAssignmentMetadataIfNeeded > ---------------------------------------------------------------------------------------------- > > Key: KAFKA-8806 > URL: https://issues.apache.org/jira/browse/KAFKA-8806 > Project: Kafka > Issue Type: Bug > Affects Versions: 2.3.0 > Reporter: Xavier Léauté > Assignee: David Arthur > Priority: Major > > Comparing the performance profile of 2.2.0 and 2.3.0, we are seeing > significant performance differences in the > {{KafkaConumer.updateAssignmentMetadataIfNeeded()}} method. > The call to {{KafkaConsumer.updateAssignmentMetadataIfNeeded()}} now > represents roughly 40% of CPU time spent in {{KafkaConsumer.poll()}}, when > before it only represented less than 2%. > Most of the extra time appears to be spent in > {{KafkaConsumer.validateOffsetsIfNeeded()}}, which did not show up in > previous profiles. -- This message was sent by Atlassian JIRA (v7.6.14#76016)