emkornfield commented on code in PR #39153:
URL: https://github.com/apache/arrow/pull/39153#discussion_r1421197611
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cpp/src/parquet/column_reader.h:
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@@ -368,6 +368,11 @@ class PARQUET_EXPORT RecordReader {
virtual void DebugPrintState() = 0;
+ /// \brief Returns the dictionary owned by the current decoder. Throws an
+ /// exception if the current decoder is not for dictionary encoding.
+ /// \param[out] dictionary_length The number of dictionary entries.
+ virtual const uint8_t* ReadDictionary(int32_t* dictionary_length) = 0;
Review Comment:
why uint8_t should this be int32? or provide some more details on how to
interpret this?
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