Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/19871#discussion_r155160106
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
---
@@ -553,6 +557,8 @@ object DataSource extends Logging {
"org.apache.spark.sql.execution.datasources.parquet.DefaultSource"
-> parquet,
"org.apache.spark.sql.hive.orc.DefaultSource" -> orc,
"org.apache.spark.sql.hive.orc" -> orc,
+ "org.apache.spark.sql.execution.datasources.orc.DefaultSource" ->
nativeOrc,
+ "org.apache.spark.sql.execution.datasources.orc" -> nativeOrc,
--- End diff --
This map is for backward compatibility in case we move data sources around.
I think this `datasources.orc` is newly added. Why we need to add them here?
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