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[Enhancement] Kudu scanner should be allowed to do non-share scan. #53123

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@Jcnessss Jcnessss commented Nov 22, 2024

Why I'm doing:

For now, all scanners generated by HiveDataSource are not allowed to do non-share scan. It make sense for file scans since the size of each file might diff a lot. But the sizes of the tablets in kudu are basically the same, so we should try to assign morsel uniformly among operators to avoid data skew (showed below).

Kudu scan:
image

the following project:
image

What I'm doing:

Allow non-share scan in kudu connector.

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

@Jcnessss Jcnessss requested a review from a team as a code owner November 22, 2024 03:47
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[BE Incremental Coverage Report]

pass : 4 / 4 (100.00%)

file detail

path covered_line new_line coverage not_covered_line_detail
🔵 src/connector/hive_connector.cpp 4 4 100.00% []

@Jcnessss Jcnessss force-pushed the kudu_individual_scan branch 4 times, most recently from c2dca5c to f648756 Compare November 22, 2024 09:51
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[Java-Extensions Incremental Coverage Report]

pass : 0 / 0 (0%)

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[FE Incremental Coverage Report]

pass : 0 / 0 (0%)

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