Cassandra Host Data Source stress test
It is part of the generic_host_data_source_unittest.cc, able to be implemented for other HDS as well. It executes INSERT statements and a certain SELECT statement which Cassandra struggles in performance with since it has to do two queries instead of a join. All statement executions are timed and repeated on an increasingly number of hosts. It is placed last and DISABLED_ as you don't want to run this during a usual make check.
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