Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/16944#discussion_r102550255
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -296,6 +296,21 @@ object SQLConf {
.longConf
.createWithDefault(250 * 1024 * 1024)
+ object HiveCaseSensitiveInferenceMode extends Enumeration {
+ type HiveCaseSensitiveInferenceMode = Value
+ val INFER_AND_SAVE, INFER_ONLY, NEVER_INFER = Value
+ }
+ val HIVE_CASE_SENSITIVE_INFERENCE =
buildConf("spark.sql.hive.caseSensitiveInferenceMode")
+ .doc("Configures the action to take when a case-sensitive schema
cannot be read from a Hive " +
+ "table's properties. Valid options include INFER_AND_SAVE (infer the
case-sensitive " +
--- End diff --
Probably want to add some explanation as to why this matters even though
SQL is not case sensitive, e.g.
// Note that Spark SQL itself not case-sensitive, but since file formats
such as parquet are, a case-sensitive schema is required in order to properly
read fields.
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