westonpace commented on a change in pull request #11285:
URL: https://github.com/apache/arrow/pull/11285#discussion_r723673903
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File path: cpp/src/arrow/dataset/scanner.h
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@@ -123,6 +123,12 @@ struct ARROW_DS_EXPORT ScanOptions {
/// Fragment-specific scan options.
std::shared_ptr<FragmentScanOptions> fragment_scan_options;
+ /// Callback which will be run whenever the scanner pauses due to
backpressure
+ ///
+ /// This is mostly for debugging & tracing so that the consumer can be
notified if
+ /// they are not consuming data quickly enough.
+ std::function<void()> on_paused_callback;
Review comment:
I've removed this and did some general cleanup of the PR.
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