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<topology-params> could have any number of <param> elements.

For example, a topology file would look like the following:

<topology>

    <topology-params>
        <param>
            <name>hadoop.kerberos.secured</name>
            <value>true</value>
        </param>
     </topology-params>

...

    </gateway>

...

</topology>

Alternative solution based on use of identity assertion provider for kerberos (could also consider trusted-proxy as the name):

<topology>

   <gateway>

       ....

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