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compute: Emit dataflow import outputs as the columnar edge #37786

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compute: Emit dataflow import outputs as the columnar edge #37786

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c7c149b
compute: Emit dataflow import outputs as the columnar edge
antiguru Jul 21, 2026
3fc55f7
test: update relations.slt golden for import leaf-encode
antiguru Jul 22, 2026
c30a407
style: split structuring semicolons in import leaf-encode comments
antiguru Jul 22, 2026
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24 changes: 18 additions & 6 deletions src/compute/src/render.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -166,7 +166,7 @@ use crate::extensions::temporal_bucket::TemporalBucketing;
use crate::logging::compute::{
ComputeEvent, DataflowGlobal, LirMapping, LirMetadata, LogDataflowErrors, OperatorHydration,
};
use crate::render::columnar::CollectionEdge;
use crate::render::columnar::{CollectionEdge, vec_to_columnar};
use crate::render::context::{ArrangementFlavor, Context};
use crate::render::errors::DataflowErrorSer;
use crate::typedefs::{ErrBatcher, ErrBuilder, ErrSpine, KeyBatcher, MzTimestamp};
Expand Down Expand Up @@ -375,8 +375,11 @@ pub fn build_compute_dataflow(
);

for (id, (oks, errs)) in imported_sources.into_iter() {
let bundle = crate::render::CollectionBundle::from_collections(
oks.enter(region),
// Imports read row-shaped data from persist. Encode it to the
// columnar edge at the boundary. The batches are already
// consolidated, so this leaf-encode is non-consolidating.
let bundle = crate::render::CollectionBundle::from_edge(
CollectionEdge::Columnar(vec_to_columnar(oks.enter(region))),
errs.enter(region),
);
// Associate collection bundle with the source identifier.
Expand Down Expand Up @@ -475,8 +478,11 @@ pub fn build_compute_dataflow(
);

for (id, (oks, errs)) in imported_sources.into_iter() {
let bundle = crate::render::CollectionBundle::from_collections(
oks.enter_region(region),
// Imports read row-shaped data from persist. Encode it to the
// columnar edge at the boundary. The batches are already
// consolidated, so this leaf-encode is non-consolidating.
let bundle = crate::render::CollectionBundle::from_edge(
CollectionEdge::Columnar(vec_to_columnar(oks.enter_region(region))),
errs.enter_region(region),
);
// Associate collection bundle with the source identifier.
Expand Down Expand Up @@ -668,7 +674,13 @@ where
start_signal,
|e, _| e.clone(),
);
CollectionBundle::from_collections(oks, errs)
// The filtered index collection is row-shaped. Encode it to
// the columnar edge at the boundary. It is already
// consolidated, so this leaf-encode is non-consolidating.
CollectionBundle::from_edge(
CollectionEdge::Columnar(vec_to_columnar(oks)),
errs,
)
}
};
self.update_id(Id::Global(idx.on_id), bundle);
Expand Down
6 changes: 4 additions & 2 deletions test/sqllogictest/introspection/relations.slt
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Original file line number Diff line number Diff line change
Expand Up @@ -65,9 +65,10 @@ FormArrangementKey Concatenate alloc::vec::Vec<(mz_compute::render::errors::Da
InputRegion:␠materialize.public.test_primary_idx BuildRegion:␠materialize.public.test_primary_idx alloc::vec::Vec<(mz_compute::render::errors::DataflowErrorSer,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
InputRegion:␠materialize.public.test_primary_idx BuildRegion:␠materialize.public.test_primary_idx alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
LimitProgress(Dataflow:␠materialize.public.test_primary_idx) Probe alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
LogOperatorHydration␠(1) FormArrangementKey alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
LogOperatorHydration␠(1) FormArrangementKey mz_timely_util::columnar::Column<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
OkErr SuppressEarlyProgress alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
SuppressEarlyProgress LimitProgress(Dataflow:␠materialize.public.test_primary_idx) alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
VecToColumnar BuildingObject(User(2)) mz_timely_util::columnar::Column<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
decode_backpressure_probe(u1) Feedback alloc::vec::Vec<core::convert::Infallible>
expire_stream_at(materialize.public.test_primary_idx_export_index_errs) LogDataflowErrorsStream alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::key_batch::OrdKeyBatch<mz_compute::typedefs::spines::MzStack<((mz_compute::render::errors::DataflowErrorSer,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
expire_stream_at(materialize.public.test_primary_idx_export_index_oks) InspectBatch alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
Expand Down Expand Up @@ -97,11 +98,12 @@ GROUP BY type;
2 alloc::vec::Vec<(usize,␠mz_persist_client::fetch::ExchangeableBatchPart<mz_repr::timestamp::Timestamp>)>
2 alloc::vec::Vec<mz_txn_wal::txn_read::DataRemapEntry<mz_repr::timestamp::Timestamp>>
4 alloc::vec::Vec<(core::result::Result<mz_repr::row::Row,␠mz_compute::render::errors::DataflowErrorSer>,␠(mz_repr::timestamp::Timestamp,␠mz_storage_operators::persist_source::Subtime),␠mz_ore::overflowing::Overflowing<i64>)>
4 mz_timely_util::columnar::Column<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
5 alloc::vec::Vec<core::convert::Infallible>
5 alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::key_batch::OrdKeyBatch<mz_compute::typedefs::spines::MzStack<((mz_compute::render::errors::DataflowErrorSer,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
6 alloc::vec::Vec<(mz_compute::render::errors::DataflowErrorSer,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
6 alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
6 alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
9 alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>

query TTT rowsort
SELECT mdod_from.name AS from_name,
Expand Down
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