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https://issues.apache.org/jira/browse/SPARK-38094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-38094:
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Assignee: Apache Spark
> Parquet: enable matching schema columns by field id
> ---------------------------------------------------
>
> Key: SPARK-38094
> URL: https://issues.apache.org/jira/browse/SPARK-38094
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Affects Versions: 3.3
> Reporter: Jackie Zhang
> Assignee: Apache Spark
> Priority: Major
>
> Field Id is a native field in the Parquet schema
> ([https://github.com/apache/parquet-format/blob/master/src/main/thrift/parquet.thrift#L398])
> After this PR, when the requested schema has field IDs, Parquet readers will
> first use the field ID to determine which Parquet columns to read, before
> falling back to using column names as before. It enables matching columns by
> field id for supported DWs like iceberg and Delta.
> This PR supports:
> * OSS vectorized reader
> does not support:
> * Parquet-mr reader due to lack of field id support (needs a follow up
> ticket)
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