David Arthur created KAFKA-10521:
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Summary: Remove ZK watch for completing partition reassignment
Key: KAFKA-10521
URL: https://issues.apache.org/jira/browse/KAFKA-10521
Project: Kafka
Issue Type: Improvement
Components: controller
Affects Versions: 2.7.0
Reporter: David Arthur
This is a follow-on from KAFKA-8836.
Currently we have a ZK watch on the partition "/state" znode which fires a
handler in the controller to check if a reassignment can be completed due to
replicas catching up with the leader. This is located in
KafkaController#processPartitionReassignmentIsrChange
Following the change to updating ISR with the new AlterIsr RPC, we would like
to remove this ZK watch and replace it with a direct call when writing out a
new ISR in the controller.
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