question Re: SAM Ambari ConnectionException in Archives of Support Questions (Read Only)

SAM Ambari ConnectionException

beejal_vibhakar — Tue, 21 Apr 2026 12:19:57 GMT

HDF Version = 3.0

Tutorial# tutorial-830

I am following this tutorial (URL - https://hortonworks.com/tutorial/real-time-event-processing-in-nifi-sam-schema-registry-and-superset/). Step#5 of this tutorial requires to configure a Service Pool.

After entering Ambari URL = http://sandbox-hdf.hortonworks.com:9080/api/v1/clusters/Sandbox and Username/Password = admin/admin, it gives me javax.ws.rs.ProcessingException on top right corner (See attached ambarierror.png)

Please advise if I am missing anything.

Re: SAM Ambari ConnectionException

david_a_doran — Mon, 09 Oct 2017 17:57:06 GMT

Hi Beejal, if you're using a local sandbox, have you tried 127.0.0.1 instead of sandbox-hdf.hortonworks.com? Also, my sandbox VM is hosting Ambari on port 8080 so the address becomes http://127.0.0.1:8080.

Re: SAM Ambari ConnectionException

beejal_vibhakar — Mon, 09 Oct 2017 18:09:43 GMT

David - Thanks for responding. I tried 127.0.0.1 and it doesn't work. BTW, with HDF Sandbox Ambari opens at port 9080.

If I directly try to access this Ambari URL in a separate browser tab, Ambari responds back with JSON data. So it doesn't look like connectivity issue. Maybe it is some internal application (SAM) issue.

Re: SAM Ambari ConnectionException

beejal_vibhakar — Mon, 16 Oct 2017 22:55:03 GMT

It works at port 8080 instead of port 9080. So by changing URL to http://sandbox-hdf.hortonworks.com:8080/api/v1/clusters/Sandbox, I was able to add the Service Pool.