enhance: [2.5] add param for tuning max VARCHAR length and restore limit to 65535

[PwzXxm]

issue: #38882
pr: #38884

Signed-off-by: Patrick Weizhi Xu weizhi.xu@zilliz.com
(cherry picked from commit a64a737)

[mergify]

@PwzXxm Please associate the related pr of master to the body of your Pull Request. (eg. “pr: #”)

[mergify]

@PwzXxm go-sdk check failed, comment rerun go-sdk can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 69.23077% with 4 lines in your changes missing coverage. Please review.

Project coverage is 81.07%. Comparing base (84f8737) to head (a8ee962).
Report is 4 commits behind head on 2.5.

Files with missing lines	Patch %	Lines
internal/proxy/task.go	0.00%	3 Missing ⚠️
internal/proxy/util.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.5   #38883      +/-   ##
==========================================
- Coverage   81.07%   81.07%   -0.01%     
==========================================
  Files        1383     1383              
  Lines      195500   195510      +10     
==========================================
+ Hits       158510   158512       +2     
+ Misses      31436    31434       -2     
- Partials     5554     5564      +10     

Components	Coverage Δ
Client	78.26% <ø> (ø)
Core	69.46% <ø> (+0.01%)	⬆️
Go	83.05% <69.23%> (-0.01%)	⬇️

Files with missing lines	Coverage Δ
pkg/util/paramtable/component_param.go	98.39% <100.00%> (+<0.01%)	⬆️
internal/proxy/util.go	89.46% <50.00%> (+<0.01%)	⬆️
internal/proxy/task.go	80.64% <0.00%> (-0.05%)	⬇️

... and 36 files with indirect coverage changes

[PwzXxm]

/hold

[PwzXxm]

/unhold

[liliu-z]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liliu-z, PwzXxm

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• internal/proxy/OWNERS [liliu-z]
• pkg/util/OWNERS [liliu-z]
• tests/OWNERS [liliu-z]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment