romainfrancois commented on a change in pull request #9615:
URL: https://github.com/apache/arrow/pull/9615#discussion_r628187430
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File path: r/src/r_to_arrow.cpp
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@@ -46,6 +50,41 @@ using internal::MakeConverter;
namespace r {
+class RTasks {
+ public:
+ using Task = std::function<Status()>;
+
+ RTasks()
+ : parallel_tasks(arrow::internal::TaskGroup::MakeThreaded(
+ arrow::internal::GetCpuThreadPool())) {}
+
+ Status Finish() {
+ Status status = Status::OK();
+
+ // run the delayed tasks now
+ for (auto& task : delayed_serial_tasks) {
+ status &= task();
+ if (!status.ok()) break;
+ }
+
+ // then wait for the parallel tasks to finish
+ status &= parallel_tasks->Finish();
Review comment:
I'm not sure how to do this
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