gitmodimo opened a new pull request, #47392: URL: https://github.com/apache/arrow/pull/47392
### Rationale for this change Provide infrastructure for unified backpressure control. ### What changes are included in this PR? BackpressureController is moved from asof_join and sorted_merge to common backpressure. BackpressureCombiner with BackpressureCombiner::Source is added to handle multiple pause sources. ### Are these changes tested? Test is added. ### Are there any user-facing changes? New api is available -- 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: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org