Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/orc/pull/160#discussion_r134293310
--- Diff: java/mapreduce/src/java/org/apache/orc/mapred/OrcInputFormat.java
---
@@ -58,7 +58,7 @@
*/
public static boolean[] parseInclude(TypeDescription schema,
String columnsStr) {
- if (columnsStr == null ||
+ if (StringUtils.isBlank(columnsStr) ||
--- End diff --
BTW, is this enough for ORC column selection to return all null fields?
It looks to me that it returns all value fields. I mean without column
selection.
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