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https://issues.apache.org/jira/browse/FLINK-21388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17285801#comment-17285801
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Etienne Chauchot commented on FLINK-21388:
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For the reference: [parquet DECIMAL logical type definition
|https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#decimal]
> Parquet DECIMAL logical type is not properly supported in
> ParquetSchemaConverter
> --------------------------------------------------------------------------------
>
> Key: FLINK-21388
> URL: https://issues.apache.org/jira/browse/FLINK-21388
> Project: Flink
> Issue Type: Bug
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile), Table
> SQL / Ecosystem
> Reporter: Etienne Chauchot
> Assignee: Etienne Chauchot
> Priority: Major
>
> For a parquet field such as this one
> {code:java}
> optional int32 ss_wholesale_cost (DECIMAL(7,2));{code}
> _ParquetSchemaConverter_ raises the exception:
> {code:java}
> Unsupported original type : DECIMAL for primitive type INT32{code}
> whereas it should be mapped to flink _DECIMAL_ Datatype (_BIG_DEC_ type
> information) owing to
> https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/connectors/formats/parquet.html#data-type-mapping
>
> and
> https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/types.html#old-planner
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