Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1469#discussion_r153062729
--- Diff:
integration/spark2/src/main/scala/org/apache/spark/util/AlterTableUtil.scala ---
@@ -21,10 +21,11 @@ import scala.collection.JavaConverters._
import scala.collection.mutable.ListBuffer
import org.apache.spark.SparkConf
-import org.apache.spark.sql.{CarbonEnv, SparkSession}
+import org.apache.spark.sql.{CarbonEnv, CarbonSession, SparkSession}
import org.apache.spark.sql.catalyst.TableIdentifier
-import org.apache.spark.sql.hive.{CarbonRelation, CarbonSessionState}
+import org.apache.spark.sql.hive.{CarbonRelation, HiveExternalCatalog}
import org.apache.spark.sql.hive.HiveExternalCatalog._
+import org.apache.spark.sql.internal.SessionState
--- End diff --
Remove unused import
---
