Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20933#discussion_r178103430
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/orc/OrcColumnarBatchReader.java
---
@@ -62,6 +62,12 @@
*/
private int[] requestedColIds;
+ /**
+ * The column IDs of the ORC file partition schema which are required by
this reader.
+ * -1 means this required column doesn't exist in the ORC partition
columns.
+ */
+ private int[] requestedPartitionColds;
--- End diff --
requestedPartitionColds -> requestedPartitionColIds
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