[ISSUE #4133]Optimize OpenFunctionSourceConnector poll

[mxsm]

Fixes #4133

Motivation

Explain the content here.
Explain why you want to make the changes and what problem you're trying to solve.

Modifications

Optimize OpenFunctionSourceConnector poll

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)
• If a feature is not applicable for documentation, explain why?
• If a feature is not documented yet in this PR, please create a followup issue for adding the documentation

[mxsm]

@xwm1992 I hava fix conflict

[codecov]

Codecov Report

Merging #4134 (cf4334d) into master (991cbda) will not change coverage.
The diff coverage is n/a.

❗ Current head cf4334d differs from pull request most recent head 140bebd. Consider uploading reports for the commit 140bebd to get more accurate results

@@            Coverage Diff            @@
##             master    #4134   +/-   ##
=========================================
  Coverage     16.93%   16.93%           
  Complexity     1410     1410           
=========================================
  Files           588      588           
  Lines         25739    25739           
  Branches       2387     2387           
=========================================
  Hits           4358     4358           
  Misses        20946    20946           
  Partials        435      435           

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