Dandandan commented on code in PR #22010:
URL: https://github.com/apache/datafusion/pull/22010#discussion_r3186325722
##########
datafusion/physical-plan/src/repartition/mod.rs:
##########
@@ -143,11 +144,183 @@ type MaybeBatch = Option<Result<RepartitionBatch>>;
type InputPartitionsToCurrentPartitionSender =
Vec<DistributionSender<MaybeBatch>>;
type InputPartitionsToCurrentPartitionReceiver =
Vec<DistributionReceiver<MaybeBatch>>;
-/// Output channel with its associated memory reservation and spill writer
+/// One input task's collection of output channels (its send-side view of
+/// every output partition). Owns the per-call helpers for coalescing,
+/// finalizing, and sending.
+///
+/// This complements [`PartitionChannels`] (the per-output-partition,
+/// authoritative struct that owns `rx`, `spill_readers`, and the underlying
+/// `Mutex<LimitedBatchCoalescer>` / `AtomicUsize`). Each [`OutputChannel`]
+/// inside `inner` holds cloned `Arc`s pointing back at those shared
+/// resources.
+struct OutputChannels {
+ inner: HashMap<usize, OutputChannel>,
Review Comment:
Probably no perf change but I think `Vec<Option<OutputChannel>>` is better
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
