[jira] [Resolved] (SPARK-38094) Parquet: enable matching schema columns by field id

["Wenchen Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-38094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-38094.
---------------------------------
    Fix Version/s: 3.3.0
       Resolution: Fixed

Issue resolved by pull request 35385
[https://github.com/apache/spark/pull/35385]

> 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: 3.3.0
>            Reporter: Jackie Zhang
>            Priority: Major
>             Fix For: 3.3.0
>
>
> 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:
>  * vectorized reader
>  * Parquet-mr reader



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