Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/14207#discussion_r71453356
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/createDataSourceTables.scala
---
@@ -95,17 +95,38 @@ case class CreateDataSourceTableCommand(
}
// Create the relation to validate the arguments before writing the
metadata to the metastore.
- DataSource(
- sparkSession = sparkSession,
- userSpecifiedSchema = userSpecifiedSchema,
- className = provider,
- bucketSpec = None,
- options = optionsWithPath).resolveRelation(checkPathExist = false)
+ val dataSource: HadoopFsRelation =
+ DataSource(
+ sparkSession = sparkSession,
+ userSpecifiedSchema = userSpecifiedSchema,
+ className = provider,
+ bucketSpec = None,
+ options = optionsWithPath)
+ .resolveRelation(checkPathExist =
false).asInstanceOf[HadoopFsRelation]
--- End diff --
I think a safer way is to do a pattern match here, if it's
`HadoopFsRelation`, get it's partition columns, else, no partition columns
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