gortiz commented on issue #14196:
URL: https://github.com/apache/pinot/issues/14196#issuecomment-2597012194
Please let me know if I'm wrong, but the dynamic broadcast is currently
limited to semi-joins. Am I right?
What we would like to do is to apply dynamic filtering even for inner-joins
where the right relation is being used to project columns (as it is used in
Trino). For example:
```mermaid
flowchart BT
InnerJoin
ExchangeLeft
ExchangeRight
ScanA
ScanB
ExtraB[...]
ExchangeLeft --> InnerJoin
ScanA --> ExchangeLeft
ExchangeRight --> InnerJoin
ExtraB --> ExchangeRight
ScanB --> ExtraB
```
Will be transformed into something like:
```mermaid
flowchart BT
InnerJoin
ExchangeLeft
ExchangeRight["ExchangeRight (spool)"]
ScanA
ScanB
ExtraB[...]
ExchangeLeft --> InnerJoin
ExchangeRight --> InnerJoin
ExtraB --> ExchangeRight
ScanB --> ExtraB
FilterIn --> ExchangeLeft
ScanA --> FilterIn
ExchangeRight -->|only keys and pipeline breaker| FilterIn
```
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