fix: Produce buffered null join row only if all joined rows are failed on join filter in SMJ full join #12090
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viirya
commented
Aug 20, 2024
| @@ -134,7 +134,6 @@ Alice 100 NULL NULL | |||
| Alice 50 Alice 2 | |||
| Bob 1 NULL NULL | |||
| NULL NULL Alice 1 | |||
| NULL NULL Alice 2 | |||
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This is incorrect. Alice 2 was joined with Alice 50 above. We should not produce null join row for it.
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double checked the joins, it looks correct
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Found this bug during debugging apache/datafusion-comet#553. |
viirya
commented
Aug 20, 2024
| query IIII | ||
| select * from ( | ||
| with t as ( | ||
| select id_a id_a_1, id_a % 5 id_a_2 from (select unnest(make_array(5, 6, 7, 8, 9, 0, 1, 2, 3, 4)) id_a) |
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The order of the values in the array is important. If it is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, it cannot test against the bug.
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comphead
reviewed
Aug 20, 2024
comphead
reviewed
Aug 20, 2024
comphead
approved these changes
Aug 21, 2024
|
Thanks @comphead |
|
FYI @richox |
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I also checked the SMJ benchmarks are running good on this branch |
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Thank you @comphead |
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Which issue does this PR close?
Closes #12091.
Rationale for this change
What changes are included in this PR?
Are these changes tested?
Are there any user-facing changes?