Welcome to Apache Solr Jaeger Tracer Configurator ======== **WARNING**: This module is deprecated for removal in v10.0. Apache Solr Jaeger Tracer Configurator provides a way for you to expose Solr's tracing to Jaeger. # Setup Jaeger Tracer Configurator Add this Solr Module to your Solr installation by enabling it via `-Dsolr.modules=jaegertracer-configurator` There are a number of sampler's available to Jaeger. Learn more about the available samplers at https://www.jaegertracing.io/docs/sampling/#client-sampling-configuration. The Jaeger Tracer Configurator is added to `solr.xml` like this: ``` ``` There are no configuration elements in the XML; instead, this 3rd party system is configured using System Properties or Environment Variables. The full list are listed at [Jaeger-README](https://github.com/jaegertracing/jaeger-client-java/blob/master/jaeger-core/README.md). For example, to use the probabilistic sampler, you could set this environment variable: ``` export JAEGER_SAMPLER_TYPE=probabilistic ``` or System property: ``` bin/solr start -DJAEGER_SAMPLER_TYPE=probabilistic ```