pkuwm commented on issue #526: Need a better way to verify (wait) if the partition assignment converged or not. URL: https://github.com/apache/helix/issues/526#issuecomment-614966963 Note down an idea: verifier listens on a Znode, when controller completes calculation, it sends a message or updates the Znode so verifier knows controllers completes calculation. @jiajunwang's concern: About why it's still not a complete idea, consider the following scenario: event A processed in controller test case trigger some changes controller notify for event A processed test case proceed prematurely (event B has not been processed yet) Maybe we can create one Znode for each event, and verifier needs to check if the message/znode data is what it's looking for to proceed?
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