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TCP transport for delivering messages should be implemented and leave Zookeeper only coordination, service discovery and similar tasks.

Integration testing framework

Local checks provide non-relevant results. Real cluster checks may be non-reproducible.

To develop, check and be able to recheck fixes related to "Crash recovery speed-up" we should write a framework that allows us to create reproducible tests that can be performed in a real environment. 

A possible solution is to use the Ducktape framework.

Risks and Assumptions

// Describe project risks, such as API or binary compatibility issues, major protocol changes, etc.

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