Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14750#discussion_r78124662
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveTable.scala
---
@@ -169,7 +169,10 @@ case class InsertIntoHiveTable(
// All partition column names in the format of "<column name
1>/<column name 2>/..."
val partitionColumns =
fileSinkConf.getTableInfo.getProperties.getProperty("partition_columns")
- val partitionColumnNames =
Option(partitionColumns).map(_.split("/")).getOrElse(Array.empty)
+ // As the keys of partition spec `partition` is always lowercase, we
should also lowercase the
+ // partition column names of the table here.
+ val partitionColumnNames =
+
Option(partitionColumns).map(_.split("/").map(_.toLowerCase)).getOrElse(Array.empty)
--- End diff --
After more investigation,
[`fileSinkConf.getTableInfo`](https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveTable.scala#L171)
is
[`table.tableDesc`](https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveTable.scala#L145).
That means, we do not need to convert it to lower case.
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