HeryLong created KAFKA-8931:
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Summary: PR '#6850' fix issue 'KAFKA-8449', but lead to restart
all cached tasks, which conflict to the motivation of incremental cooperative
rebalancing.
Key: KAFKA-8931
URL: https://issues.apache.org/jira/browse/KAFKA-8931
Project: Kafka
Issue Type: Bug
Components: KafkaConnect
Affects Versions: 2.3.0
Reporter: HeryLong
Recently, we are testing Kafka Connect 2.3.0, checking the incremental
cooperative rebalancing mechanism.
We found that when new connector was putted via REST endpoint, Kafka Connect
2.3.0 will restart all cached tasks;
And the issuse is
'[KAFKA-8449|https://issues.apache.org/jira/browse/KAFKA-8449]', the PR is
'[#6850|[https://github.com/apache/kafka/pull/6850]';]
So, the result is, new connector putted will lead to all cached tasks
restarted, which conflict to the motivation of incremental cooperative
rebalancing.
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