[SPARK-11823] Ignores HiveThriftBinaryServerSuite's test jdbc cancel

https://issues.apache.org/jira/browse/SPARK-11823

This test often hangs and times out, leaving hanging processes. Let's ignore it for now and improve the test.

Author: Yin Huai <yhuai@databricks.com>

Closes #10715 from yhuai/SPARK-11823-ignore.

sql/hive-thriftserver/src/test/scala/org/apache/spark/sql/hive/thriftserver/HiveThriftServer2Suites.scala

@@ -347,7 +347,9 @@ class HiveThriftBinaryServerSuite extends HiveThriftJdbcTest {
     )
   }
 
-  test("test jdbc cancel") {
+  // This test often hangs and then times out, leaving the hanging processes.
+  // Let's ignore it and improve the test.
+  ignore("test jdbc cancel") {
     withJdbcStatement { statement =>
       val queries = Seq(
         "DROP TABLE IF EXISTS test_map",