Chris Egerton created KAFKA-13764: ------------------------------------- Summary: Potential improvements for Connect incremental rebalancing logic Key: KAFKA-13764 URL: https://issues.apache.org/jira/browse/KAFKA-13764 Project: Kafka Issue Type: Improvement Components: KafkaConnect Reporter: Chris Egerton Assignee: Chris Egerton
There are a few small changes that we might make to the incremental rebalancing logic for Kafka Connect to improve distribution of connectors and tasks across a cluster and address potential bugs: # During assignment, assign new connectors and tasks across the cluster before calculating revocations that may be necessary in order to balance the cluster. This way, we can potentially skip a round of revocation by using newly-created connectors and tasks to balance out the cluster. # Perform connector and task revocation in more cases, such as when one or more connectors are reconfigured to use fewer tasks, which can possibly lead to an imbalanced cluster. # Fix [this line|https://github.com/apache/kafka/blob/06ca4850c5b2b12e972f48e03fe4f9c1032f9a3e/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/IncrementalCooperativeAssignor.java#L248] to use the same aggregation logic that's used [here|https://github.com/apache/kafka/blob/06ca4850c5b2b12e972f48e03fe4f9c1032f9a3e/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/IncrementalCooperativeAssignor.java#L273-L281] in order to avoid overwriting map values when they should be combined instead. -- This message was sent by Atlassian Jira (v8.20.1#820001)