It depends. There are Cloudera kudu engine, it quite easy can handle millions atomic inserts per second. But it can't support true acid transaction. On other ha

It depends. There are Cloudera kudu engine, it quite easy can handle millions atomic inserts per second. But it can't support true acid transaction. On other hand SQL also can't use true ACID in high load system. Serialazible transactions replaced by Read committed transactions, "banking day", queues + background process, etc