Ryan Berdeen created KAFKA-1676:
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Summary: Ability to cancel replica reassignment in progress
Key: KAFKA-1676
URL: https://issues.apache.org/jira/browse/KAFKA-1676
Project: Kafka
Issue Type: New Feature
Components: controller
Affects Versions: 0.8.1.1
Reporter: Ryan Berdeen
Assignee: Neha Narkhede
I've had several situations where I have started a replica reassignment that
I've needed to cancel before it completed.
This has happened
* when moving to a new broker that turns out to be running on an impaired server
* if the extra replication hurts cluster performance
* dealing with replication bugs in kafka, like KAFKA-1670
* when a single replica reassignment is taking a long time, and I want to start
more replica assignments without waiting for the current one to finish.
For the first three cases, as a last resort I have deleted the
{{/admin/reassign_partitions}} key from ZooKeeper and restarted the controller.
I would like to be able to do this by signaling the controller to stop, and to
leave the list of assignments as they exist at that moment.
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