First of all, again my sincere thanks for your time looking into this. My small project (it's for my master thesis) is about comparing a transformation process in a RDBMS against the same process in a Hadoop cluster. I decided to go for HDP 2.5 since I'm completely new in Hortonworks while I already used Cloudera. If I'll still have time I'll use it again to compare Hive against Impala on my specific problem. I'll also want to add more DataNodes and see how performance is improved. I didn't go for the sandbox because installing something you don't know is always a learning challenge. Of course I'm aware of my limitations and that's why after many attempts I decided to come here for help. To my project the Interactive Hive Server is not very important since I'm not looking for fast replies to ad hoc selects, even though I'm curious about the results. For now I've disabled the Interactive Server and everything is running well. When you suggest me to reinstall LLAP, is it as simple as activating again the Interactive Server or so I need to go and manually install the component? Regarding the Cloud option, maybe when I have all the project implemented and I'll need to do the scalability tests. Again, thank you very much for your time.
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