"If not exists" was an oversight of a previous test. Removing it solved the problem. Thanks a lot, Jim!

giampaolo

2016-02-09 1:21 GMT+01:00 Jim Ancona <jim@anconafamily.com>:
The "if not exists" in your INSERT means that you are incurring a performance hit by using Paxos. Do you need that? Have you tried your test without  it?

Jim