Yinan Li created HELIX-611:
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Summary: Helix should support callback on message handling in
MessageHandler
Key: HELIX-611
URL: https://issues.apache.org/jira/browse/HELIX-611
Project: Apache Helix
Issue Type: Improvement
Reporter: Yinan Li
For message processing it seems Helix schedules a task internally to handle a
message (HelixTaskExecutor is used in DefaultMessagingService). This makes
handling a SHUTDOWN message difficult as normally the action following the
handling of a SHUTDOWN message is shutting down every components including the
HelixManager. However, disconnecting a ZKHelixManager causes the task running
the message handler to be interrupted. SendAndWait is probably not a good
option here either as it's hard to estimate how much delay there will be to
handle a message.
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