wangyum opened a new pull request #24906: [SPARK-28104][SQL] Implement Spark's own GetColumnsOperation URL: https://github.com/apache/spark/pull/24906 ## What changes were proposed in this pull request? [SPARK-24196](https://issues.apache.org/jira/browse/SPARK-24196) and [SPARK-24570](https://issues.apache.org/jira/browse/SPARK-24570) implemented Spark's own `GetSchemasOperation` and `GetTablesOperation`. This pr implements Spark's own `GetColumnsOperation`. ## How was this patch tested? unit tests and manual tests: 
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