Floats in TPC-DS data

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
55/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
python
Domain
data-engineering, databases

Research direction

Inspect how the TPC-DS data schemas are generated or converted, then trace where integer columns become double for DataFusion. Done means the benchmark preserves the original integer types and no longer presents them as floating-point data.

Written by the indexing model from the issue text.

Description

Integer columns have double type in TPC-DS.

This leads to some planning weirdness in DataFusion, as it can not estimate cardinality based on float datatypes.

We should keep the original types.

Dominant language
Python
Stars
23
Forks
19
No merged PRs in 30d

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