Matthias J. Sax created KAFKA-7380:
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Summary: Global thread restore blocks KafkaStreams#start()
Key: KAFKA-7380
URL: https://issues.apache.org/jira/browse/KAFKA-7380
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Matthias J. Sax
KafkaStreams#start() is documented to be non-blocking and should return
immediately. However, if global stores are used, `start()` blocks until all
global stores are restored.
We should change this and start all threads at the same time while all
StreamThread would to go `wait()` state on startup immediately, and only resume
after global thread restore finishes and `wakeup()` all StreamThreads.
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