korowa opened a new pull request, #8658:
URL: https://github.com/apache/arrow-datafusion/pull/8658
## Which issue does this PR close?
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Closes #8130.
## Rationale for this change
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The least harmful way of allowing `HashJoinStream` to process probe-side
batch records in original order -- is to adjust build-side input to produce
FIFO hash map as a result of `update_hash`, using current data structure
without any modifications, and this can be achieved by reverse iteration over
build-side input.
## What changes are included in this PR?
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- `collect_left_input` iterates over collected batches in reverse order
- `update_hash` and `build_equal_condition_join_indices` now accept
`fifo_hashmap` argument, which determines the iteration order for input batches
(`SymmetricsHashJoin` execution has not changed)
- default implemenations for `update_from_iter` & `get_matched_indices` in
`JoinHashMapType` trait -- to unload join helper functions from
HashMap-specific code
## Are these changes tested?
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`assert_batches_sorted_eq` replaced with `assert_batches_eq` for Inner /
RightSemi / RightAnti non-partitioned join test cases to validate that join
output preserves input(s) order.
## Are there any user-facing changes?
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No.
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