On Mon, Feb 26, 2018 at 8:21 AM, Jai Bheemsen Rao Dhanwada < jaibheem...@gmail.com> wrote:
> > I am trying to evaluate the JMX hints metrics for cassandra(TotalHints). > However, when I am testing the metrics, the total hints accumulated count > shows perfectly fine, but when the hints are replayed and the hints > count(cql> SELECT * from system.hints; ) becomes zero on cql, and the JMX > metrics counter doesn't reset to zero and stays at the last known non-zero > value(eg: 6). when new hints are created the total get added to the last > non-zero count(e.g 6+2). Any idea if there is a way to get the active count > during the given time period? > That's correct. The "TotalHints" metric gives you a running total since the last startup of the node. In Grafana you can use rate() or diff() aggregation on top of that, with a caveat that it produces a huge negative when the node is actually restarted and the next reading is less than the previous. There is also "TotalHintsInProgress" which might be what you're looking for, this one is reset back to 0 by the node once the hints are processed. Cheers, -- Alex
