Hey all, We have several deployments of Solr across our enterprise. Our largest one is a several GB and when enough documents are added an OOM exception is occurring.
To debug this problem I have enable JMX. My goal is to write some cacti templates similar to the ones I have done for hadoop. http://www.jointhegrid.com/hadoop/. The only cacti template for solr I have found is old, broken and is using curl and PHP to try and read the values off the web interface. I have a few general questions/comments and also would like to know how others are dealing with this. 1) SNMP has counters/gauges. With JMX it is hard to know what a variable is without watching it for a while. Some fields are obvious, (total_x) (cumulative_x) it is worth wild to add some notes in the MBEAN info to say "works like counter" "works like gauge". This way a "network engineer" like me does not have to go code surfing to figure out how to graph them. Has anyone written up a list of what the attributes are, types, and what they mean? 2) The values that are not counter style I am assuming are sampled, what is the sampling rate and is it adjustable? Any tips are helpful. Thank you,
