sorry for my ignorance, but Crate and "SQL on top of Hadoop" fulfil quite different needs. How would you handle tens of thousands concurrent queries on a Hadoop

sorry for my ignorance, but Crate and "SQL on top of Hadoop" fulfil quite different needs. How would you handle tens of thousands concurrent queries on a Hadoop platform? Read and write at the same time? On the other hand side - crate will never be able to batch-oriented, complex map/reduce workload.