rfc: distributed dynamic filtering#553
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Jul 15, 2026
| ┌──────────────────────────────┐ ┌──────────────────────────────┐ | ||
| │ ┌──────────────────────────┐ │ │ ┌──────────────────────────┐ │ | ||
| │ │ RepartitionExec │ │ │ │ RepartitionExec │ │ | ||
| │ │ partitioning=Hash(a, 12) │ │ │ │ partitioning=Hash(a, 12) │ │ |
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The partitioning here is hash(a) % 12 but in the above stage it's hash(a) % 4 assuming 4 target_partitions. So, the hash join will generate 4 cases.
It's actually not correct to merge all of the cases. We need to OR within each case.
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Informs #528