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https://issues.apache.org/jira/browse/SPARK-57569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk updated SPARK-57569:
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Shepherd: Max Gekk
> Support TimeType in Parquet Variant shredding
> ---------------------------------------------
>
> Key: SPARK-57569
> URL: https://issues.apache.org/jira/browse/SPARK-57569
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Max Gekk
> Priority: Major
>
> h2. What
> Support {{TimeType}} in Parquet Variant shredding (columnar reconstruction of
> shredded
> Variant values).
> h2. Where
> {{SparkShreddingUtils}}
> (sql/core/.../execution/datasources/parquet/SparkShreddingUtils.scala, around
> line 926)
> reconstructs shredded Variant values through a columnar batch.
> h2. Relationship to SPARK-54203
> This area is gated at the row-to-columnar converter level by SPARK-54203
> ({{RowToColumnConverter.getConverterForType}} in
> sql/core/src/main/scala/org/apache/spark/sql/execution/Columnar.scala), which
> currently has
> no {{TimeType}} case. Once SPARK-54203 lands, the work below becomes
> possible. It may also
> require TIME support in this component's own layer (Arrow type mapping,
> Parquet/ORC logical
> types, or Variant encoding).
> h2. Related
> * TIME <-> VARIANT casting and encoding is tracked by SPARK-52621; this
> ticket covers the
> shredded columnar reconstruction path specifically.
> h2. Acceptance criteria
> * A shredded Variant containing TIME values reconstructs correctly via the
> columnar path.
> * Tests added in the Variant shredding suites.
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