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https://issues.apache.org/jira/browse/SPARK-36680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-36680:
-----------------------------------
Assignee: wang-zhun
> Supports Dynamic Table Options for Spark SQL
> --------------------------------------------
>
> Key: SPARK-36680
> URL: https://issues.apache.org/jira/browse/SPARK-36680
> Project: Spark
> Issue Type: Wish
> Components: SQL
> Affects Versions: 3.1.2
> Reporter: wang-zhun
> Assignee: wang-zhun
> Priority: Major
> Labels: pull-request-available
>
> Now a DataFrame API user can implement dynamic options through the
> _DataFrameReader$option_ method, but Spark SQL users cannot use.
> {code:java}
> DataFrameReader/AstBuilder -> UnresolvedRelation$options ->
> DataSourceV2Relation$options -> SupportsRead$newScanBuilder(options)
> {code}
>
> The table options were persisted to the Catalog and if we want to modify
> that, we should use another DDL like "_ALTER TABLE ..._". But there are some
> cases that user want to modify the table options dynamically just in the
> query:
> * JDBCTable set _fetchsize_ according to the actual situation of the table
> * IcebergTable support time travel
> {code:java}
> spark.read
> .option("snapshot-id", 10963874102873L)
> .format("iceberg")
> .load("path/to/table"){code}
> These parameters setting is very common and ad-hoc, setting them flexibly
> would promote the user experience with Spark SQL especially for Now we
> support catalog expansion.
>
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