I am currently performing some tests in a small cluster (4 nodes) and I would like to know if there are any best practices regarding the node that actually launches the test scripts in the cluster. I am using test tools like hive-testbench and HiBench.
There should be no impact in the performance if I run a spark script in the same machine that is hosting the thrift server, or should I add another machine to the cluster just to launch the test/benchmark scripts?
Thanks in advance.
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