Robert Joseph Evans created SPARK-41218:
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Summary: ParquetTable reports is supports negative scale decimal
values
Key: SPARK-41218
URL: https://issues.apache.org/jira/browse/SPARK-41218
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0, 3.4.0
Reporter: Robert Joseph Evans
This is likely very minor, but {{ParquetTable}} says it supports all
{{AtomicTypes}}
https://github.com/apache/spark/blob/07427b854be58810bd485c00c5e5c576d5aa404e/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/parquet/ParquetTable.scala#L52
But the ParquetSpec and code says that negative scale decimal values are not
supported, and the code will throw an exception if you try to store one.
{code}
java.lang.IllegalArgumentException: Invalid DECIMAL scale: -2
at org.apache.parquet.Preconditions.checkArgument(Preconditions.java:57)
at
org.apache.parquet.schema.Types$BasePrimitiveBuilder.decimalMetadata(Types.java:616)
at
org.apache.parquet.schema.Types$BasePrimitiveBuilder.build(Types.java:443)
at
org.apache.parquet.schema.Types$BasePrimitiveBuilder.build(Types.java:338)
{code}
We should update the ParquetTable code to be accurate in this respect.
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