[Feature] CoordinatorServer Supports High-Available

[wuchong]

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Motivation

The current implementation of the CoordinatorServer in Fluss lacks high availability support, which poses a risk to system stability and reliability. Achieving high availability is crucial for ensuring that the CoordinatorServer can handle failures gracefully and continue to provide uninterrupted service to clients.

Solution

We can deploy a standby CoordinatorServer alongside the primary one. In the event of a failure in the primary CoordinatorServer, the standby server will take over the control through a leader election process orchestrated by Zookeeper. Since the CoordinatorServer is stateless, this transition is seamless and straightforward.

Anything else?

No response

Willingness to contribute

• I'm willing to submit a PR!