we currently do not have dedicated hdinsight support. Nevertheless, deploynet of the oneagent via the vm-extension should work as this is agnostic to higher-level services like hdinsight, servicefabric..
A workaround is to leverage the available hdinsight cluster monitoring and push your required metrics into dynatrace (via api)
We do have hdinsight on our roadmap, still looking for customer use-cases/requirements for monitoring. If you can share them, that would be fantastic.
hdinsight clusters (as a service) doesnt expose its underlying VM's as actual interactive VM's. I've been able to find the server names via OMS, however the standard CLI/PS doesn't yield any options for applying vm extensions or the like. Could you supply a guide on how to setup the one agent for hdinsight clusters ?