[Enhancement] Skip load primary index for empty rowset

[sevev]

Why I'm doing:

During the publish process, the primary index is loaded, which consumes additional memory. However, for empty rowsets, loading the primary index is unnecessary. Skipping the loading of the primary index can save memory and improve the efficiency of the publish operation.

What I'm doing:

Skip load primary index for empty rowset.

Fixes #issue

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.4
  • 3.3
  • 3.2
  • 3.1
  • 3.0

[sevev]

@mergify rebase

[mergify]

rebase

✅ Branch has been successfully rebased

[github-actions]

[Java-Extensions Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[FE Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[BE Incremental Coverage Report]

✅ pass : 12 / 14 (85.71%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	be/src/storage/lake/update_manager.cpp	4	6	66.67%	[1133, 1134]
🔵	be/src/storage/lake/txn_log_applier.cpp	8	8	100.00%	[]

[github-actions]

@Mergifyio backport branch-3.4

[github-actions]

@Mergifyio backport branch-3.3

[mergify]

backport branch-3.4

✅ Backports have been created

• #55807 [Enhancement] Skip load primary index for empty rowset (backport #55628) has been created for branch branch-3.4

[mergify]

backport branch-3.3

✅ Backports have been created

• #55806 [Enhancement] Skip load primary index for empty rowset (backport #55628) has been created for branch branch-3.3