[GitHub] viirya commented on a change in pull request #23766: [SPARK-26859][SQL] Fix field writer index bug in non-vectorized ORC deserializer

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viirya commented on a change in pull request #23766: [SPARK-26859][SQL] Fix field writer index bug in non-vectorized ORC deserializer
URL: https://github.com/apache/spark/pull/23766#discussion_r256318136
 
 

 ##########
 File path: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/orc/OrcSourceSuite.scala
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 @@ -332,6 +334,24 @@ abstract class OrcSuite extends OrcTest with BeforeAndAfterAll {
       assert(version === SPARK_VERSION_SHORT)
     }
   }
+
+  test("[SPARK-26859] Reading ORC files with explicit schema can result in wrong data") {
+    withSQLConf(SQLConf.ORC_VECTORIZED_READER_ENABLED.key -> "false") {
 
 Review comment:
   I can't easily examine the codebase for now to check it, so thanks for explaining it. 

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