Release 1.12.0

Backend Changes

Breaking Changes

• The kafka flags were removed in favor of kafka.producer and kafka.consumer flags (#1424, @ledor473)

  The following flags have been removed in the Collector and the Ingester:

  --kafka.brokers
  --kafka.encoding
  --kafka.topic
  --ingester.brokers
  --ingester.encoding
  --ingester.topic
  --ingester.group-id
  

  In the Collector, they are replaced by:

  --kafka.producer.brokers
  --kafka.producer.encoding
  --kafka.producer.topic
  

  In the Ingester, they are replaced by:

  --kafka.consumer.brokers
  --kafka.consumer.encoding
  --kafka.consumer.topic
  --kafka.consumer.group-id
  

• Add Admin port and group all ports in one file (#1442, @yurishkuro)

  This change fixes issues #1428, #1332 and moves all metrics endpoints from API ports to admin ports. It requires re-configuring Prometheus scraping rules. Each Jaeger binary has its own admin port that can be found under --admin-http-port command line flag by running the ${binary} help command.

New Features

• Add gRPC resolver using external discovery service (#1498, @guanw)
• gRPC storage plugin framework (#1461, @chvck)
• Supports customized kafka client id (#1507, @newly12)
• Support gRPC for query service (#1307, @annanay25)
• Expose tls.InsecureSkipVerify to es.tls.* CLI flags (#1473, @stefanvassilev)
• Return info msg for /health endpoint (#1465, @stefanvassilev)
• Add pprof endpoint to admin endpoint (#1375, @konradgaluszka)
• Add inbound transport as label to collector metrics #1446 (guanw)
• Sorted key/value store badger backed storage plugin (#760, @burmanm)
• Add Admin port and group all ports in one file (#1442, @yurishkuro)
• Adds support for agent level tag (#1396, @annanay25)
• Add a Downsampling writer that drop a percentage of spans (#1353, @guanw)

Bug fixes, Minor Improvements

• Sort traces in memory store to return most recent traces (#1394, @jacobmarble)
• Add span format tag for jaeger-collector (#1493, @guo0693)
• Upgrade gRPC to 1.20.1 (#1492, @guanw)
• Switch from counter to a gauge for partitions held (#1485, @bobrik)
• Add CORS handling for Zipkin collector service (#1463, @JonasVerhofste)
• Check elasticsearch nil response (#1467, @YEXINGZHE54)
• Disable sampling in logger - zap(#1460, @psinghal20)
• New layout for proto definitions and generated files (#1427, @annanay25)
• Upgrade Go to 1.12.1 (#1437 ,@yurishkuro)

UI Changes

• UI pinned to version 1.2.0. The changelog is available here v1.2.0