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https://issues.apache.org/jira/browse/SPARK-59001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-59001:
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Labels: pull-request-available (was: )
> Empty2Null, text, and Hive prune fallback for CHAR/VARCHAR
> ----------------------------------------------------------
>
> Key: SPARK-59001
> URL: https://issues.apache.org/jira/browse/SPARK-59001
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 5.0.0
> Reporter: Serge Rielau
> Priority: Major
> Labels: pull-request-available
>
> Under spark.sql.charVarchar.standardSemantics.enabled, CHAR/VARCHAR must
> work on V1 write/scan paths that still special-case StringType.
> * V1Writes Empty2Null: treat the string family as empty-to-null for
> partition columns (CHAR(0) / empty VARCHAR become NULL), without
> widening Hive's SupportedAttribute list.
> * Text datasource: accept CHAR/VARCHAR as text, same as STRING.
> * Hive partition prune: when the partition schema includes CHAR/VARCHAR,
> fall back to client-side prunePartitionsFastFallback. Hive still does
> not push CHAR/VARCHAR keys as SupportedAttribute. PAD SPACE compare
> is collation/RTRIM, not a type-level policy.
> PR: https://github.com/apache/spark/pull/58255
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