KIRTI RUGE created HIVE-27529:
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Summary: Support dictionary encoding in parquet for decimal types
Key: HIVE-27529
URL: https://issues.apache.org/jira/browse/HIVE-27529
Project: Hive
Issue Type: Improvement
Reporter: KIRTI RUGE
Attachments: image-2023-07-26-15-18-55-480.png
Parquet does not support any dictionary of type decimal . At present, supported
PlainValuesDictionary types are
PlainFloatDictionary
PlainIntegerDictionary
PlainDoubleDictionary
PlainLongDictionary
PlainBinaryDictionary
Whenever there is conversion from any physical(any primitive)/logical(decimal)
parquet type to hive decimal type, dictionary support needs to be considered.
We need to investigate further on how this support can be implemented from hive
side, or at parquet side if needed
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