[SPARK-14826][SQL] Remove HiveQueryExecution

## What changes were proposed in this pull request?
This patch removes HiveQueryExecution. As part of this, I consolidated all the describe commands into DescribeTableCommand.

## How was this patch tested?
Should be covered by existing tests.

Author: Reynold Xin <rxin@databricks.com>

Closes #12588 from rxin/SPARK-14826.

1 files changed, 5 insertions, 5 deletions

diff --git a/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkSQLDriver.scala b/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkSQLDriver.scala
index 7e8eada5ad..f730952507 100644
--- a/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkSQLDriver.scala
+++ b/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkSQLDriver.scala
@@ -28,7 +28,8 @@ import org.apache.hadoop.hive.ql.processors.CommandProcessorResponse
 
 import org.apache.spark.internal.Logging
 import org.apache.spark.sql.AnalysisException
-import org.apache.spark.sql.hive.{HiveContext, HiveMetastoreTypes, HiveQueryExecution}
+import org.apache.spark.sql.execution.QueryExecution
+import org.apache.spark.sql.hive.{HiveContext, HiveMetastoreTypes}
 
 private[hive] class SparkSQLDriver(
     val context: HiveContext = SparkSQLEnv.hiveContext)
@@ -41,7 +42,7 @@ private[hive] class SparkSQLDriver(
   override def init(): Unit = {
   }
 
-  private def getResultSetSchema(query: HiveQueryExecution): Schema = {
+  private def getResultSetSchema(query: QueryExecution): Schema = {
     val analyzed = query.analyzed
     logDebug(s"Result Schema: ${analyzed.output}")
     if (analyzed.output.isEmpty) {
@@ -59,9 +60,8 @@ private[hive] class SparkSQLDriver(
     // TODO unify the error code
     try {
       context.sparkContext.setJobDescription(command)
-      val execution =
-        context.executePlan(context.sql(command).logicalPlan).asInstanceOf[HiveQueryExecution]
-      hiveResponse = execution.stringResult()
+      val execution = context.executePlan(context.sql(command).logicalPlan)
+      hiveResponse = execution.hiveResultString()
       tableSchema = getResultSetSchema(execution)
       new CommandProcessorResponse(0)
     } catch {