Polybase - Incorrect Syntax near 'HADOOP'

Hi,

We haven an MSSQL Enterprise Edition. Have installed.

1. SQL Server PolyBase Data Movement

2. SQL Server PolyBase Engine.

Followed this document with title "Configure PolyBase to access external data in Hadoop"

When we run this.

CREATEEXTERNALDATASOURCE MyHadoopClusterWITH ( 
      TYPE = HADOOP,
      LOCATION ='hdfs://10.xxx.xx.xxx:xxxx',
      RESOURCE_MANAGER_LOCATION = '10.xxx.xx.xxx:xxxx', CREDENTIAL = HadoopUser1 ); 

we get