enhance: [2.4] support recall estimation

[chasingegg]

issue: #37899
pr: #38017

[codecov]

Codecov Report

Attention: Patch coverage is 69.72477% with 33 lines in your changes missing coverage. Please review.

Project coverage is 83.38%. Comparing base (6b310e1) to head (8e6853c).
Report is 13 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/proxy/impl.go	35.71%	16 Missing and 2 partials ⚠️
internal/proxy/util.go	89.47%	6 Missing ⚠️
internal/proxy/task_search.go	40.00%	2 Missing and 1 partial ⚠️
internal/querynodev2/optimizers/query_hook.go	57.14%	2 Missing and 1 partial ⚠️
internal/querynodev2/segments/result.go	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #38064      +/-   ##
==========================================
+ Coverage   80.40%   83.38%   +2.98%     
==========================================
  Files        1077      809     -268     
  Lines      168911   142524   -26387     
==========================================
- Hits       135811   118843   -16968     
+ Misses      28648    19220    -9428     
- Partials     4452     4461       +9     

Files with missing lines	Coverage Δ
internal/querynodev2/services.go	86.82% <100.00%> (+0.08%)	⬆️
pkg/common/common.go	73.84% <ø> (ø)
pkg/metrics/proxy_metrics.go	100.00% <100.00%> (ø)
internal/proxy/task_search.go	74.62% <40.00%> (-0.19%)	⬇️
internal/querynodev2/optimizers/query_hook.go	80.82% <57.14%> (-2.52%)	⬇️
internal/querynodev2/segments/result.go	69.68% <40.00%> (-0.27%)	⬇️
internal/proxy/util.go	90.82% <89.47%> (-0.06%)	⬇️
internal/proxy/impl.go	83.86% <35.71%> (-0.21%)	⬇️

... and 303 files with indirect coverage changes

[czs007]

typo of serch

[czs007]

/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chasingegg, czs007

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[mergify]

@chasingegg E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[czs007]

/lgtm