Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20933#discussion_r179503793
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1185,6 +1185,13 @@ object SQLConf {
.stringConf
.createWithDefault("")
+ val DISABLED_V2_DATA_SOURCE_READERS =
buildConf("spark.sql.disabledV2DataSourceReaders")
+ .internal()
+ .doc("A comma-separated list of data source short names for which " +
+ "DataSourceReader is disabled. Reads from these sources will fall
back to the V1 sources")
--- End diff --
`its v2 implementation is disabled. Reads from these sources will fall back
to the V1 implementation.`
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