mapleFU commented on code in PR #42239:
URL: https://github.com/apache/arrow/pull/42239#discussion_r1650547476
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cpp/src/arrow/record_batch.h:
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@@ -310,7 +310,20 @@ class ARROW_EXPORT RecordBatchReader {
/// \brief Read the next record batch in the stream. Return null for batch
/// when reaching end of stream
///
- /// \param[out] batch the next loaded batch, null at end of stream
+ /// example:
+ /// ```
+ /// std::shared_ptr<RecordBatch> batch;
+ /// while (true) {
+ /// ARROW_RETURN_NOT_OK(reader->ReadNext(&batch));
+ /// if (batch == nullptr) {
Review Comment:
Personally I found some place handled this( like DatasetWriter ) but some
not...
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