Zipkin 1.23
Zipkin 1.23 improves Elasticsearch performance and simplifies image assembly
Elasticsearch performance
The zipkin UI has drop-downs for service and span name. These queries can become troublesome as the data set grows. Particularly in Elasticsearch, we had poor performance because nested terms queries are expensive. We now pre-index a "servicespan" type which flattens the query, making it far more performant. You have no action to take except to upgrade. Thanks especially to @semyonslepov and @devinsba for rolling this out to production and verifying this improves things.
Simplified image assembly
Besides normal advantages of updating, Spring Boot 1.5 cleaned up an integration pattern we use for plugging in azure and aws support into our stock server. These layered docker images are easier to understand and simpler now. Thanks to @dsyer for championing our cause upstream.