Shutdown mechanism for recurring ExecutionPlan

[farhin23]

Feature Request

Implement mechanism to stop recurring task of ExecutionPlan and shutdown its executor service.

Which Areas Would Be Affected?

• ExecutionPlan(and its implementation),
• ExecutionManager and
• FederatedCatalogCacheExtension

Why Is the Feature Desired?

When terminating a BaseRuntime that uses a recurring ExecutionPlan, it is essential to ensure that the associated executor service is properly shut down.
While the executor service threads will eventually terminate when the java process exits, relying solely on this behavior can lead to unnecessary resource consumption. The proposed mechanism can trigger and ensure a clean shutdown of these threads.

Who will sponsor this feature?

Please @-mention the committer that will sponsor your feature.

Solution Proposal

ExecutionPlan and ExecutionManager should include a stop method.
The FederatedCatalogCacheExtension should call the ExecutionManager#stop() during shutdown phase.

Originally posted by @farhin23 in #273

[github-actions]

This issue is stale because it has been open for 28 days with no activity.

[ndr-brt]

@farhin23 are you still committed to this? otherwise it can be assigned to somebody else