Handle the cdc and source milvus chaos

[SimFG]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 100 lines in your changes are missing coverage. Please review.

Comparison is base (6529521) 76.56% compared to head (9f874b1) 75.69%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #43      +/-   ##
==========================================
- Coverage   76.56%   75.69%   -0.87%     
==========================================
  Files          39       39              
  Lines        4877     5011     +134     
==========================================
+ Hits         3734     3793      +59     
- Misses        962     1031      +69     
- Partials      181      187       +6     

Files	Coverage Δ
core/reader/etcd_op.go	68.77% <100.00%> (+0.06%)	⬆️
core/reader/ts_manager.go	95.00% <100.00%> (ø)
server/store/mysql.go	63.03% <100.00%> (+2.28%)	⬆️
core/writer/milvus_handler.go	89.38% <57.89%> (-3.65%)	⬇️
core/reader/replicate_channel_manager.go	62.33% <29.77%> (-3.97%)	⬇️