Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4995#discussion_r27191997
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/sqlUDFCurrentDB.scala ---
@@ -0,0 +1,18 @@
+package org.apache.spark.sql.hive
+
+import org.apache.hadoop.hive.ql.udf.generic.UDFCurrentDB
+import org.apache.hadoop.hive.ql.exec.Description
+import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject
+import org.apache.hadoop.hive.ql.session.SessionState
+
+// deterministic in the query range
+@Description(name = "current_database",
+ value = "_FUNC_() - returns currently using database name")
+class sqlUDFCurrentDB extends UDFCurrentDB {
+
+ // This function just throws an exception in hive0.13
+ override def evaluate(arguments: Array[DeferredObject]): Object = {
+ SessionState.get().getCurrentDatabase()
--- End diff --
Does this actually work in the distributed mode?
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