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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