mapleFU commented on code in PR #43763:
URL: https://github.com/apache/arrow/pull/43763#discussion_r1740994092
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cpp/src/arrow/compute/row/row_encoder_internal.h:
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@@ -259,6 +334,9 @@ class ARROW_EXPORT RowEncoder {
Status EncodeAndAppend(const ExecSpan& batch);
Result<ExecBatch> Decode(int64_t num_rows, const int32_t* row_ids);
+ // Returns the encoded representation of the row at index i.
+ // If i is kRowIdForNulls, it returns the pre-encoded all-nulls
+ // row.
Review Comment:
https://github.com/apache/arrow/issues/43909
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