test_kudu.TestCreateExternalTable on S3 failing with "AlreadyExistsException: Database already exists"

test setup failure

conftest.py:347: in conn
    with __unique_conn(db_name=db_name, timeout=timeout) as conn:
/usr/lib64/python2.6/contextlib.py:16: in __enter__
    return self.gen.next()
conftest.py:380: in __unique_conn
    cur.execute("CREATE DATABASE %s" % db_name)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:302: in execute
    configuration=configuration)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:343: in execute_async
    self._execute_async(op)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:362: in _execute_async
    operation_fn()
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:340: in op
    async=True)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:1027: in execute
    return self._operation('ExecuteStatement', req)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:957: in _operation
    resp = self._rpc(kind, request)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:925: in _rpc
    err_if_rpc_not_ok(response)
../infra/python/env/lib/python2.6/site-packages/impala/hiveserver2.py:704: in err_if_rpc_not_ok
    raise HiveServer2Error(resp.status.errorMessage)
E   HiveServer2Error: ImpalaRuntimeException: Error making 'createDatabase' RPC to Hive Metastore: 
E   CAUSED BY: AlreadyExistsException: Database f0mraw already exists