The UT test of spark is failed. Because there is a test in SQLQuerySuite about...

The UT test of spark is failed. Because there is a test in SQLQuerySuite about creating table “test”

If the tests in "sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala" are  running before CachedTableSuite.scala, the test("Drop cached table") will failed. Because the table test is created in SQLQuerySuite.scala  ,and this table not droped. So when running "drop cached table", table test already exists.

There is error info:
01:18:35.738 ERROR hive.ql.exec.DDLTask: org.apache.hadoop.hive.ql.metadata.HiveException: AlreadyExistsException(message:Table test already exists)
at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:616)
at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:4189)
at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:281)
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:153)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:85)
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1503)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1270)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1088)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:911)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:901)test”

And the test about "create table test" in "sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala,is:

  test("SPARK-4825 save join to table") {
    val testData = sparkContext.parallelize(1 to 10).map(i => TestData(i, i.toString)).toDF()
    sql("CREATE TABLE test1 (key INT, value STRING)")
    testData.insertInto("test1")
    sql("CREATE TABLE test2 (key INT, value STRING)")
    testData.insertInto("test2")
    testData.insertInto("test2")
    sql("CREATE TABLE test AS SELECT COUNT(a.value) FROM test1 a JOIN test2 b ON a.key =   b.key")
    checkAnswer(
      table("test"),
      sql("SELECT COUNT(a.value) FROM test1 a JOIN test2 b ON a.key = b.key").collect().toSeq)
  }

Author: KaiXinXiaoLei <huleilei1@huawei.com>

Closes #5150 from KaiXinXiaoLei/testFailed and squashes the following commits:

7534b02 [KaiXinXiaoLei] The UT test of spark is failed.