scheduler(ticdc): Updating ReplicationSet.stats only when stats is not empty (#10225) #10228
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This is an automated cherry-pick of #10225
Issue Number: close #10224
What is changed and how it works?
update stats only when it's not empty to make metrics updating normally
Check List
Tests
Questions
Will it cause performance regression or break compatibility?
Do you need to update user documentation, design documentation or monitoring documentation?
Release note