More details about the setup: Solr version: 8.2.0 The documentation here: https://solr.apache.org/guide/8_2/metrics-reporting.html#core-solrcore-registry talks about
> The Core (SolrCore) Registry > <https://solr.apache.org/guide/8_2/metrics-reporting.html#core-level-metrics> > includes solr.core.<collection>, one for each core. When making requests > with the Metrics API > <https://solr.apache.org/guide/8_2/metrics-reporting.html#metrics-api>, > you can specify &group=core to limit to only these metrics. > > - all common RequestHandlers report: request timers / counters, > timeouts, errors. Handlers that support process distributed shard requests > also report shardRequests sub-counters for each type of distributed > request. > - index-level events > > <https://solr.apache.org/guide/8_2/metrics-reporting.html#index-merge-metrics>: > meters for minor / major merges, number of merged docs, number of deleted > docs, gauges for currently running merges and their size. > - *shard replication and transaction log replay on replicas,* > > but I am unable to find the relevant metric name which corresponds to shard replication and transaction log replay. I have also attached the output of "solr/admin/metrics?group=core" from one of our pull replica nodes Regards 6harat On Mon, Aug 28, 2023 at 11:20 AM 6harat <bharat.gulati.ce...@gmail.com> wrote: > Hi, > > We are running a Solr Cloud setup in production with the following setup: > 1. TLOG nodes: 3 > 2. Pull nodes: M (depending upon the read scalability that is needed) > > Last week we encountered an issue where one of the pull replica wasn't > able to fetch the index from the leader. While we are still in the RCA > process, we wanted to find if a metric already exists under > "/solr/admin/metrics" which can be used as a way to identify when the given > core last synced up with the leader. This will massively help in improving > our alerting setup and figure out stale nodes quickly. > > Apologies if such a question is already answered or the details already > exist in the reference manual. If that is indeed the case, please drop the > relevant link below. > > Regards > 6harat > -- Regards 6harat
core_metrics.json
Description: application/json
