Re: [EXTERNAL] Cassandra 3.11 - below normal disk read after restart

2024-09-06 Thread Const Eust
RF 6??? Well, the traffic is routing to the other 6 nodes, which likeky can serve the traffic with the super high RF, and the newly restarted node not seeing the traffic until gossip settles? On Fri, Sep 6, 2024, 2:54 PM Jeff Jirsa wrote: > The unfortunate reality here is I don’t think anyone i

Re: [EXTERNAL] Cassandra 3.11 - below normal disk read after restart

2024-09-06 Thread Jeff Jirsa
The unfortunate reality here is I don’t think anyone is going to be able to answer with the data provided. Are the disk IOPS from cassandra reads? Or compaction? Or repair? Do they ramp with client reads (is that curve matching your customer traffic?)? Are they from client data reads or from in

Re: Cassandra 3.11 - below normal disk read after restart

2024-09-06 Thread Jeff Jirsa
If they went up by 1/7th, could potentially assume it was something related to the snitch not choosing the restarted host. They went up by a lot (2-3x?). What consistency level do you use for reads and writes, and do you have graphs for local reads / hint delivery? (I’m GUESSING that you’re seei