opentelemetry-java-contrib/jmx-metrics/docs/target-systems/solr.md

Solr Metrics

The JMX Metric Gatherer provides built in Solr metric gathering capabilities. Details about using JMX with Solr can be found here: https://solr.apache.org/guide/6_6/using-jmx-with-solr.html

Metrics

Core Metrics

• Name: solr.document.count

• Description: The total number of indexed documents.

• Unit: {documents}

• Labels: core

• Instrument Type: ObservableLongUpDownCounter

• Name: solr.index.size

• Description: The total index size.

• Unit: by

• Labels: core

• Instrument Type: ObservableLongUpDownCounter

• Name: solr.request.count

• Description: The number of queries made.

• Unit: {queries}

• Labels: core, type, handler

• Instrument Type: ObservableLongCounter

• Name: solr.request.time.average

• Description: The average time of a query, based on Solr's histogram configuration.

• Unit: ms

• Labels: core, type, handler

• Instrument Type: ObservableDoubleValue

• Name: solr.request.error.count

• Description: The number of queries resulting in an error.

• Unit: {queries}

• Labels: core, type, handler

• Instrument Type: ObservableLongCounter

• Name: solr.request.timeout.count

• Description: The number of queries resulting in a timeout.

• Unit: {queries}

• Labels: core, type, handler

• Instrument Type: ObservableLongCounter

• Name: solr.cache.eviction.count

• Description: The number of evictions from a cache.

• Unit: {evictions}

• Labels: core, cache

• Instrument Type: ObservableLongCounter

• Name: solr.cache.hit.count

• Description: The number of hits from a cache.

• Unit: {hits}

• Labels: core, cache

• Instrument Type: ObservableLongCounter

• Name: solr.cache.insert.count

• Description: The number of inserts from a cache.

• Unit: {inserts}

• Labels: core, cache

• Instrument Type: ObservableLongCounter

• Name: solr.cache.lookup.count

• Description: The number of lookups from a cache.

• Unit: {lookups}

• Labels: core, cache

• Instrument Type: ObservableLongCounter

• Name: solr.cache.size

• Description: The size of the cache occupied in memory.

• Unit: by

• Labels: core, cache

• Instrument Type: ObservableLongUpDownCounter