Release 1.8.0

Backend Changes

Breaking Changes

• Refactor agent configuration (#1092, @pavolloffay)

The following agent flags has has been deprecated in order to support multiple reporters:

--collector.host-port
--discovery.conn-check-timeout
--discovery.min-peers

New flags:

--reporter.tchannel.host-port
--reporter.tchannel.discovery.conn-check-timeout
--reporter.tchannel.discovery.min-peers

• Various changes around metrics produced by jaeger-query: Names scoped to the query component, generated for all span readers (not just ES), consolidate query metrics and include result tag (#1074, #1075 and #1096, @objectiser)

For example, sample of metrics produced for find_traces operation before:

jaeger_find_traces_attempts 1
jaeger_find_traces_errLatency_bucket{le="0.005"} 0
jaeger_find_traces_errors 0
jaeger_find_traces_okLatency_bucket{le="0.005"} 0
jaeger_find_traces_responses_bucket{le="0.005"} 1
jaeger_find_traces_successes 1

And now:

jaeger_query_latency_bucket{operation="find_traces",result="err",le="0.005"} 0
jaeger_query_latency_bucket{operation="find_traces",result="ok",le="0.005"} 2
jaeger_query_requests{operation="find_traces",result="err"} 0
jaeger_query_requests{operation="find_traces",result="ok"} 2
jaeger_query_responses_bucket{operation="find_traces",le="0.005"} 2

New Features

• Configurable deadlock detector interval for ingester (#1134, @marqc)
• Emit spans for elastic storage backend (#1128, @annanay25)
• Allow to use TLS certificates for Elasticsearch authentication (#1139, @clyang82)
• Add ingester metrics, healthcheck and rename Kafka cli flags (#1094, @ledor473)
• Add a metric for number of partitions held (#1154, @vprithvi)
• Log jaeger-collector tchannel port (#1136, @mindaugasrukas)
• Support tracer env based initialization in hotrod (#1115, @eundoosong)
• Publish ingester as binaries and docker image (#1086, @ledor473)
• Use Go 1.11 (#1104, @isaachier)
• Tag images with commit SHA and publish to -snapshot repository (#1082, @pavolloffay)

Bug fixes, Minor Improvements

• Fix child span context while tracing cassandra queries (#1131, @annanay25)
• Deadlock detector hack for Kafka driver instability (#1087, @vprithvi)
• Fix processor overriding data in a buffer (#1099, @pavolloffay)

UI Changes

New Features

• Span Search - Highlight search results (#238), @davit-y
• Span Search - Improve search logic (#237), @davit-y
• Span Search - Add result count, navigation and clear buttons (#234), @davit-y

Bug Fixes, Minor Improvements

• Use correct duration format for scatter plot (#266), @tiffon)
• Fix collapse all issues (#264), @tiffon)
• Use a moderately sized canvas for the span graph (#257), @tiffon)