pitrou commented on a change in pull request #6991:
URL: https://github.com/apache/arrow/pull/6991#discussion_r412025224
##########
File path: cpp/src/arrow/util/rle_encoding.h
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@@ -414,6 +414,8 @@ static inline bool IndexInRange(int32_t idx, int32_t
dictionary_length) {
template <typename T>
inline int RleDecoder::GetBatchWithDict(const T* dictionary, int32_t
dictionary_length,
T* values, int batch_size) {
+ using IndexType = int32_t;
Review comment:
Note that this was previously simply `int`. The change here is simply to
make things clearer and also note the index size explicitly.
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