TestDdlStatements.test_sync_ddl_drop is flaky

It failed precommit tests for unrelated change:
https://jenkins.impala.io/job/ubuntu-16.04-dockerised-tests/1405/testReport/metadata.test_ddl/TestDdlStatements/test_sync_ddl_drop_protocol__beeswax___exec_option____sync_ddl___0___batch_size___0___num_nodes___0___disable_codegen_rows_threshold___0___disable_codegen___False___abort_on_error___1___exec_single_node_rows_threshold___0____table_format__text_none_unique_database0_/

Error Message
test setup failure
Stacktrace
conftest.py:319: in cleanup

)
common/impala_test_suite.py:790: in wrapper
return function(*args, **kwargs)
common/impala_test_suite.py:798: in execute_query_expect_success
result = cls.__execute_query(impalad_client, query, query_options, user)
common/impala_test_suite.py:893: in __execute_query
return impalad_client.execute(query, user=user)
common/impala_connection.py:205: in execute
return self.__beeswax_client.execute(sql_stmt, user=user)
beeswax/impala_beeswax.py:187: in execute
handle = self.__execute_query(query_string.strip(), user=user)
beeswax/impala_beeswax.py:362: in __execute_query
handle = self.execute_query_async(query_string, user=user)
beeswax/impala_beeswax.py:356: in execute_query_async
handle = self.__do_rpc(lambda: self.imp_service.query(query,))
beeswax/impala_beeswax.py:519: in __do_rpc
raise ImpalaBeeswaxException(self.__build_error_message(b), b)
E ImpalaBeeswaxException: ImpalaBeeswaxException:
E INNER EXCEPTION: <class 'beeswaxd.ttypes.BeeswaxException'>
E MESSAGE: AnalysisException: Database does not exist: test_sync_ddl_drop_eb3f13e1