i have an already provisioned elasticsearch setup with an Index that consist of around 30Million documents. I would like to benchmark this existing setup using esrally. In order to do so esrally provides the benchmark-only pipeline. But i would like to use my own custom searches with term aggregations, significant_term aggregation and so on to benchmark my setup. How can this be achieved? Is it possible to customize the benchmark-only pipeline? Or do i have to setup a custom track? If a custom track is needed - the docs say that the corpora element is mandatory. But i don't need a custom corpora, because i do not want to index any documents?
Many thanks in advance,