lightning: return 0 early on empty parquet files (#52519)

[ti-chi-bot]

This is an automated cherry-pick of #52519

What problem does this PR solve?

Issue Number: close #52518

Problem Summary:

What changed and how does it work?

If the Parquet file is empty, directly set the size to be 0.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

Importing empty tables via Parquet no longer crash.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (release-7.5@2ecc47d). Click here to learn what that means.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #52522   +/-   ##
================================================
  Coverage               ?   71.9869%           
================================================
  Files                  ?       1410           
  Lines                  ?     409434           
  Branches               ?          0           
================================================
  Hits                   ?     294739           
  Misses                 ?      94859           
  Partials               ?      19836           

Flag	Coverage Δ
unit	71.9869% <100.0000%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.3495% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, tangenta

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• br/pkg/lightning/OWNERS [lance6716]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-12 08:53:13.43419658 +0000 UTC m=+1211654.961737122: ☑️ agreed by lance6716.
• 2024-05-01 02:13:10.61473685 +0000 UTC m=+409744.371872424: ☑️ agreed by tangenta.