columnData2Column utilizes too much CPU in a single point component #11590
Description
What did you do?
Replicate a table with 2 unique keys, which are both union index.
What did you expect to see?
No response
What did you see instead?
Here is a result of CPU profile in 30s.
profiling_2024-09-11_20-43-08.zip
The stack is very clear. model.columnData2Column utilizes almost one full core. And, GC also works in a heavy load.
The function model.columnData2Column is introduced in v8.1.0, but we don't know whether it exists in earlier versions or not.
Versions of the cluster
TiCDCs after v8.1.0.