sinkv2(cdc): add some pull-based-sink metrics #7947
Merged
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Signed-off-by: qupeng qupeng@pingcap.com
What problem does this PR solve?
Issue Number: ref #5928
What is changed and how it works?
Add some metrics for pull-based-sink.
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