BiteTheDDDDt opened a new pull request, #65600:
URL: https://github.com/apache/doris/pull/65600
### What problem does this PR solve?
Issue Number: None
Related PR: #65300
Problem Summary: Backport #65300 to branch-4.1. Hash join probe-side output
can copy projected probe columns even when the output rows map one-to-one to
the consumed probe block. This change transfers eligible probe-side columns
into the output block and avoids the redundant copy for supported join types,
while retaining conservative guards for filtering, nullable-output, and
variant-finalization cases.
The original regression coverage `test_hash_join_probe_side_zero_copy` is
included in this backport.
### Release note
None
### Check List (For Author)
- Test:
- `inner_join_impl.cpp` and `asof_left_outer_join_impl.cpp` passed
`-fsyntax-only` with the branch-4.1 release compile commands
- `clang-format --dry-run --Werror` on the changed hash-join headers
- `git diff --check upstream/branch-4.1..HEAD`
- Behavior changed: No
- Does this need documentation: No
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