Avoids confusion between logical and physical plan by adding package prefixes

Author: liancheng

sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala

@@ -18,17 +18,19 @@
 package org.apache.spark.sql.hive
 
 import org.apache.spark.annotation.Experimental
-import org.apache.spark.sql._
 import org.apache.spark.sql.catalyst.analysis.UnresolvedAttribute
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.catalyst.expressions.codegen.GeneratePredicate
 import org.apache.spark.sql.catalyst.planning._
 import org.apache.spark.sql.catalyst.plans._
 import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, LowerCaseSchema}
-import org.apache.spark.sql.execution._
-import org.apache.spark.sql.hive.execution._
+import org.apache.spark.sql.catalyst.types.StringType
 import org.apache.spark.sql.columnar.InMemoryRelation
-import org.apache.spark.sql.parquet.{ParquetRelation, ParquetTableScan}
+import org.apache.spark.sql.execution.{DescribeCommand, OutputFaker, SparkPlan}
+import org.apache.spark.sql.hive
+import org.apache.spark.sql.hive.execution._
+import org.apache.spark.sql.parquet.ParquetRelation
+import org.apache.spark.sql.{SQLContext, SchemaRDD}
 
 import scala.collection.JavaConversions._
 
@@ -196,9 +198,9 @@ private[hive] trait HiveStrategies {
       case logical.NativeCommand(sql) =>
         NativeCommand(sql, plan.output)(context) :: Nil
 
-      case DropTable(tableName, ifExists) => execution.DropTable(tableName, ifExists) :: Nil
+      case hive.DropTable(tableName, ifExists) => execution.DropTable(tableName, ifExists) :: Nil
 
-      case AnalyzeTable(tableName) => execution.AnalyzeTable(tableName) :: Nil
+      case hive.AnalyzeTable(tableName) => execution.AnalyzeTable(tableName) :: Nil
 
       case describe: logical.DescribeCommand =>
         val resolvedTable = context.executePlan(describe.table).analyzed