Micah Kornfield created ARROW-12022:
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Summary: [C++][Parquet] StatisticsAsScalars doesn't support
Decimal conversion for int primitives
Key: ARROW-12022
URL: https://issues.apache.org/jira/browse/ARROW-12022
Project: Apache Arrow
Issue Type: Bug
Components: C++
Reporter: Micah Kornfield
Logical decimal types that are stored as int primitives are not properly
handled in the code today. Also, some clarification around StatisticsAsScalars
contract is required. For FLBA and ByteArray Decimals, the smaller decimal
type that will fit the data is used, it isn't clear if that is desired or if it
should also include information from the serialized Arrow schema if present
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