Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/19571#discussion_r146783595
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/orc/OrcFileFormat.scala ---
@@ -73,6 +70,10 @@ class OrcFileFormat extends FileFormat with
DataSourceRegister with Serializable
val configuration = job.getConfiguration
+ configuration.set(
+ MAPRED_OUTPUT_SCHEMA.getAttribute,
+
org.apache.spark.sql.execution.datasources.orc.OrcFileFormat.getSchemaString(dataSchema))
--- End diff --
Do we always need to set this?
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