pitrou commented on a change in pull request #9656:
URL: https://github.com/apache/arrow/pull/9656#discussion_r590476061
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File path: cpp/src/arrow/ipc/reader.h
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@@ -169,6 +170,17 @@ class ARROW_EXPORT RecordBatchFileReader {
/// \brief Return current read statistics
virtual ReadStats stats() const = 0;
+
+ /// \brief Get a reentrant generator of record batches.
+ ///
+ /// This RecordBatchFileReader must outlive the generator.
Review comment:
Given that we're talking about an asynchronous primitive, forcing the
caller to deal with lifetime issues is a bit unfriendly IMHO. It may be simpler
to make `RecordBatchFileReader` inherit from `enable_shared_from_this` and
capture a strong reference inside the generator.
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