rtpsw commented on code in PR #13375:
URL: https://github.com/apache/arrow/pull/13375#discussion_r901077543
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cpp/src/arrow/compute/exec/options.h:
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@@ -229,6 +229,20 @@ class ARROW_EXPORT SinkNodeConsumer {
virtual Future<> Finish() = 0;
};
+class ARROW_EXPORT NullSinkNodeConsumer : public SinkNodeConsumer {
Review Comment:
See use in `cpp/src/arrow/engine/substrait/util.cc` for deserializing (and
later executing) Substrait plans without a consumer (e.g., just writers). I
intend to use this utility from PyArrow code in an upcoming PR.
AFAIU, a Substrait plan must have some consumer for proper execution. Up to
now, only a `ConsumingSinkNodeOption` was provided. A `NullSinkNodeConsumer` is
useful with the writing capability added here.
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