[PARQUET-845] Efficient storage for several INT_8 and INT_16

• Type: Wish
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Fernando Pereira
• Created: 26/Jan/17 11:09
• Updated: 23/Jun/24 03:29

Description

In very large datasets, aggregating several INT8 into INT32 fields (or byte array) can make a big difference.
In parquet, efficient algorithms exist for INT32, so if the LogicalType is INT_8 the encoded int might take up only one byte.

However further optimizations could be made by allowing the user to better specify the types.
What about BYTE_ARRAY logical type, backed by FIXED_LEN_BYTE_ARRAY type (or eventually INT_32)?