Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/12002#discussion_r57748633
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala ---
@@ -385,9 +385,9 @@ abstract class OutputWriter {
*
* @param location A [[FileCatalog]] that can enumerate the locations of
all the files that comprise
* this relation.
- * @param partitionSchema The schmea of the columns (if any) that are used
to partition the relation
+ * @param partitionSchema The schema of the columns (if any) that are used
to partition the relation
* @param dataSchema The schema of any remaining columns. Note that if
any partition columns are
- * present in the actual data files as well, they are
removed.
+ * present in the actual data files as well, they are
preserved.
--- End diff --
But when we append partitioned values, we do `val fullOutput =
dataSchema.toAttributes ++ partitionSchema.toAttributes`. It looks like the
partitioned columns are excluded in `dataSchema`?
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