If you had a query that went across the partitions and especially if you had vNodes set high, that would do it.
Kenneth Brotman From: Subroto Barua [mailto:sbarua...@yahoo.com.INVALID] Sent: Friday, February 01, 2019 8:45 AM To: User cassandra.apache.org Subject: Help with sudden spike in read requests In our production cluster, we observed sudden spike (over 160 MB/s) in read requests on *all* Cassandra nodes for a very short period (less than a min); this event happens few times a day. I am not able to get to the bottom of this issue, nothing interesting in system.log or from app level; repair was not running Does anyone have any thoughts on what could have triggered this event? Under what condition C* (if it is tied to c*) will trigger this type of event? Thanks! Subroto