Serialize dynamic filters across network boundaries

Is your feature request related to a problem or challenge?

Dynamic filters are "inlined" when serialized and deserialized (ex. maybe converted to a LiteralExpr or something).

Describe the solution you'd like

Ideally, we want the DynamicFilterPhysicalExpr type to be re-created after deserialization. We don't want it to be inlined as the contained expression.

We also want the correct deduping logic to apply (ie. if there's two dynamic filters in the same plan which are different but have the same inner state, they should share the same Arc<Inner>)

Describe alternatives you've considered

No response

Additional context

datafusion-contrib/datafusion-distributed#180

take

proto: serialize and dedupe dynamic filters

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proto: serialize and dedupe dynamic filters

proto: serialize and dedupe dynamic filters v2 (apache#21807)

proto: serialize dynamic filters on Sort, Aggregate, HashJoin plan no…

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Serialize dynamic filters across network boundaries #20418

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Serialize dynamic filters across network boundaries #20418

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jayshrivastava commented on Feb 18, 2026

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