Good time of day everyone, we've got the following thing happening.
4 node cluster, apache Cassandra 3.11.1
While speculative requests are enabled on the client's side (java datastax driver, maxSpeculativeExecutions=1 due to small cluster size), no matter which constantDelayMillis is set, driver waits exactly 90 seconds before sending request and getting responce from speculative requests.
Question: where these 90 seconds might be coming from?
"90 seconds" timeout or pause is not present anywhere in the client app's code or our Cassandra server-side timeouts.
Honestly, I'm a bit out of ideas where to look. Where the problem might be? Even "lame"/"easy" hypotheses are welcome, because my vision actually might be blurred with the search.
Thank you all very much in advance.