Fix dispatchRate is overwritten #8004
Merged
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Fixes #7863
Motivation
DispatchLimiterdoes not take effect, the namespace level policy should be usedModifications
1)If there is a topic-level policy, it will not be overwritten by the namespace-level policy when the policy is updated
2)When removing topic-level policy, namespace-level policy will be used. If the namespace-level policy does not exist, the broker level will be used
Verifying this change
unit test:
TopicPoliciesTest#testPolicyOverwrittenByNamespaceLevel