Fix dynamic filter is_used function #19734
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physical-expr
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Thanks for the quick fix! To me this approach seems great. Fixes the problem and does not make it more complex for users. |
adriangb
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Jan 10, 2026
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Thank you for reporting the issue :) |
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Which issue does this PR close?
Rationale for this change
The:is_used() API incorrectly returned false for custom
DataSourceimplementations that didn't call reassign_expr_columns() -> with_new_children() . This causedHashJoinExecto skip computing dynamic filters even when they were actually being used.What changes are included in this PR?
Updated is_used() to check both outer and inner Arc counts
Are these changes tested?
Functionality is covered by existing test
test_hashjoin_dynamic_filter_pushdown_is_used. I was not sure if to add a repro since it would require adding a customDataSource, the current tests in datafusion/core/tests/physical_optimizer/filter_pushdown/mod.rs useFileScanConfigAre there any user-facing changes?
no