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https://issues.apache.org/jira/browse/SPARK-50666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-50666:
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Summary: Support hint for reading in JDBC data source (was:
DataFrameReader supporting SQL hint)
> Support hint for reading in JDBC data source
> --------------------------------------------
>
> Key: SPARK-50666
> URL: https://issues.apache.org/jira/browse/SPARK-50666
> Project: Spark
> Issue Type: Sub-task
> Components: Connect
> Affects Versions: 4.0.0
> Reporter: Shaojie Wu
> Priority: Major
> Labels: pull-request-available
>
> We're using DataFrameReader to dump data from an Oracle source, which has a
> huge table, and want to add hints to target generated SQL.
> Many RDBMS supports SQL hint, and it's useful for performance tuning in a
> data dump case.
> Can you help to improve this method?
> {code:java}
> def jdbc(
> url: String,
> table: String,
> predicates: Array[String],
> connectionProperties: Properties): DataFrame {code}
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