enhance: Add log for case which target not update as expected

[weiliu1031]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.14%. Comparing base (907fc24) to head (97d1685).
Report is 2 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #38944       +/-   ##
===========================================
+ Coverage   69.54%   81.14%   +11.60%     
===========================================
  Files         296     1387     +1091     
  Lines       26535   196268   +169733     
===========================================
+ Hits        18454   159267   +140813     
- Misses       8081    31411    +23330     
- Partials        0     5590     +5590     

Components	Coverage Δ
Client	79.12% <ø> (∅)
Core	69.54% <ø> (+<0.01%)	⬆️
Go	83.11% <100.00%> (∅)

Files with missing lines	Coverage Δ
internal/querycoordv2/utils/util.go	85.54% <100.00%> (ø)

... and 1091 files with indirect coverage changes

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