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[PARQUET-1324] [C++] Read Parquet dictionary encoded ColumnChunks directly into an Arrow DictionaryArray - Parquet - [issue]
...Dictionary data is very common in parquet, in the current implementation parquet-cpp decodes dictionary encoded data always before creating a plain arrow array. This process is wasteful sinc...
http://issues.apache.org/jira/browse/PARQUET-1324    Author: Stav Nir , 2018-09-25, 11:26