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Changes by Version

2.30.1 (unreleased)

  • Nothing yet.

2.30.0 (2021-12-07)

  • Add deprecation notice -- Yuri Shkuro
  • Use public struct for tracer options to document initialization better (#605) -- Yuri Shkuro
  • Remove redundant newline in NewReporter init message (#603) -- wwade
  • [zipkin] Encode span IDs as full 16-hex strings #601 -- Nathan
  • [docs] Replace godoc.org with pkg.go.dev (#591) -- Aaron Jheng
  • Remove outdated reference to Zipkin model. -- Yuri Shkuro
  • Move thrift compilation to a script (#590) -- Aaron Jheng
  • Document JAEGER_TRACEID_128BIT env var -- Yuri Shkuro

2.29.1 (2021-05-24)

  • Remove dependency on "testing" in "thrift" (#586) -- @yurishkuro

2.29.0 (2021-05-20)

  • Update vendored thrift to 0.14.1 (#584) -- @nhatthm

2.28.0 (2021-04-30)

  • HTTPSamplingStrategyFetcher: Use http client with 10 second timeout (#578) -- Joe Elliott

2.27.0 (2021-04-19)

  • Don't override HTTP Reporter batch size to 1; default to 100, user can override (#571) -- R. Aidan Campbell

2.26.0 (2021-04-16)

  • Delete a baggage item when value is blank (#562) -- evan.kim
  • Trim baggage key when parsing (#566) -- sicong.huang
  • feat: extend configuration to support custom randomNumber func (#555) -- NemoO_o
  • Support JAEGER_TRACEID_128BIT env var (#547) -- Yuri Shkuro
  • Additional context protections (#544) -- Joe Elliott
  • Lock RemotelyControlledSampler.sampler on callbacks (#543) -- Dima
  • Upgrade build to Go 1.15 (#539) -- Yuri Shkuro
  • Upgrade to [email protected] to fix broken codahale/hdrhistogram dependency (#537) -- Yuri Shkuro
  • Prefix TraceID/SpanID.String() with zeroes (#533) -- Lukas Vogel
  • Upgrade to OpenTracing Go 1.2 (#525) -- Yuri Shkuro

2.25.0 (2020-07-13)

Breaking changes

  • [feat] Periodically re-resolve UDP server address, with opt-out (#520) -- Trevor Foster

    The re-resolving of UDP address is now enabled by default, to make the client more robust in Kubernetes deployments. The old resolve-once behavior can be restored by setting DisableAttemptReconnecting=true in the Configuration struct, or via JAEGER_REPORTER_ATTEMPT_RECONNECTING_DISABLED=true environment variable.

Bug fixes

  • Do not add invalid context to references (#521) -- Yuri Shkuro

2.24.0 (2020-06-14)

  • Mention FromEnv() in the README, docs, and examples (#518) -- Martin Lercher
  • Serialize access to RemotelyControlledSampler.sampler (#515) -- Dima
  • Override reporter config only when agent host/port is set in env (#513) -- ilylia
  • Converge on JAEGER_SAMPLING_ENDPOINT env variable (#511) -- Eundoo Song

2.23.1 (2020-04-28)

  • Fix regression by handling nil logger correctly (#507) -- Prithvi Raj

2.23.0 (2020-04-22)

  • Add the ability to log all span interactions at a new debug log level(#502, #503, #504) -- Prithvi Raj
  • Chore (docs): fix typos (#496, #498) -- Febrian Setianto and Ivan Babrou
  • Unset highest bit of traceID in probabilistic sampler (#490) -- Sokolov Yura

2.22.1 (2020-01-16)

  • Increase UDP batch overhead to account for data loss metrics (#488) -- Yuri Shkuro

2.22.0 (2020-01-15)

  • Report data loss stats to Jaeger backend (#482) -- Yuri Shkuro
  • Add limit on log records per span (#483) -- Sokolov Yura

2.21.1 (2019-12-20)

  • Update version correctly.

2.21.0 (2019-12-20)

  • Clarify reporting error logs (#469) -- Yuri Shkuro
  • Do not strip leading zeros from trace IDs (#472) -- Yuri Shkuro
  • Chore (docs): fixed a couple of typos (#475) -- Marc Bramaud
  • Support custom HTTP headers when reporting spans over HTTP (#479) -- Albert Teoh

2.20.1 (2019-11-08)

Minor patch via #468

  • Make AdaptiveSamplerUpdater usable with default values; Resolves #467
  • Create OperationNameLateBinding sampler option and config option
  • Make SamplerOptions var of public type, so that its functions are discoverable via godoc

2.20.0 (2019-11-06)

New Features

  • Allow all in-process spans of a trace to share sampling state (#443) -- Prithvi Raj

    Sampling state is shared between all spans of the trace that are still in memory. This allows implementation of delayed sampling decisions (see below).

  • Support delayed sampling decisions (#449) -- Yuri Shkuro

    This is a large structural change to how the samplers work. It allows some samplers to be executed multiple times on different span events (like setting a tag) and make a positive sampling decision later in the span life cycle, or even based on children spans. See README for more details.

    There is a related minor change in behavior of the adaptive (per-operation) sampler, which will no longer re-sample the trace when span.SetOperation() is called, i.e. the operation used to make the sampling decision is always the one provided at span creation.

  • Add experimental tag matching sampler (#452) -- Yuri Shkuro

    A sampler that can sample a trace based on a certain tag added to the root span or one of its local (in-process) children. The sampler can be used with another experimental PrioritySampler that allows multiple samplers to try to make a sampling decision, in a certain priority order.

  • [log/zap] Report whether a trace was sampled (#445) -- Abhinav Gupta

  • Allow config.FromEnv() to enrich an existing config object (#436) -- Vineeth Reddy

Minor patches

  • Expose Sampler on Tracer and accept sampler options via Configuration (#460) -- Yuri Shkuro
  • Fix github.com/uber-go/atomic import (#464) -- Yuri Shkuro
  • Add nodejs to crossdock tests (#441) -- Bhavin Gandhi
  • Bump Go compiler version to 1.13 (#453) -- Yuri Shkuro

2.19.0 (2019-09-23)

  • Upgrade jaeger-lib to 2.2 and unpin Prom client (#434) -- Yuri Shkuro

2.18.1 (2019-09-16)

  • Remove go.mod / go.sum that interfere with go get (#432)

2.18.0 (2019-09-09)

  • Add option "noDebugFlagOnForcedSampling" for tracer initialization [resolves #422] (#423)

2.17.0 (2019-08-30)

  • Add a flag for firehose mode (#419)
  • Default sampling server URL to agent (#414)
  • Update default sampling rate when sampling strategy is refreshed (#413)
  • Support "Self" Span Reference (#411)
  • Don't complain about blank service name if tracing is Disabled (#410) Yuri
  • Use IP address from tag if exist (#402)
  • Expose span data to custom reporters [fixes #394] (#399)
  • Fix the span allocation in the pool (#381)

2.16.0 (2019-03-24)

  • Add baggage to B3 codec (#319)

  • Add support for 128bit trace ids to zipkin thrift spans. (#378)

  • Update zipkin propagation logic to support 128bit traceIDs (#373)

  • Accept "true" for the x-b3-sampled header (#356)

  • Allow setting of PoolSpans from Config object (#322)

  • Make propagators public to allow wrapping (#379)

  • Change default metric namespace to use relevant separator for the metric backend (#364)

  • Change metrics prefix to jaeger_tracer and add descriptions (#346)

  • Bump OpenTracing to ^1.1.x (#383)

  • Upgrade jaeger-lib to v2.0.0 (#359)

  • Avoid defer when generating random number (#358)

  • Use a pool of rand.Source to reduce lock contention when creating span ids (#357)

  • Make JAEGER_ENDPOINT take priority over JAEGER_AGENT_XXX (#342)

2.15.0 (2018-10-10)

  • Fix FollowsFrom spans ignoring baggage/debug header from dummy parent context (#313)
  • Make maximum annotation length configurable in tracer options (#318)
  • Support more environment variables in configuration (#323)
  • Print error on Sampler Query failure (#328)
  • Add an HTTPOption to support custom http.RoundTripper (#333)
  • Return an error when an HTTP error code is seen in zipkin HTTP transport (#331)

2.14.0 (2018-04-30)

  • Support throttling for debug traces (#274)
  • Remove dependency on Apache Thrift (#303)
  • Remove dependency on tchannel (#295) (#294)
  • Test with Go 1.9 (#298)

2.13.0 (2018-04-15)

  • Use value receiver for config.NewTracer() (#283)
  • Lock span during jaeger thrift conversion (#273)
  • Fix the RemotelyControlledSampler so that it terminates go-routine on Close() (#260)
  • Added support for client configuration via env vars (#275) <Juraci Paixão Kröhling>
  • Allow overriding sampler in the Config (#270)

2.12.0 (2018-03-14)

  • Use lock when retrieving span.Context() (#268)
  • Add Configuration support for custom Injector and Extractor (#263)

2.11.2 (2018-01-12)

  • Add Gopkg.toml to allow using the lib with dep

2.11.1 (2018-01-03)

  • Do not enqueue spans after Reporter is closed (#235, #245)
  • Change default flush interval to 1sec (#243)

2.11.0 (2017-11-27)

  • Normalize metric names and tags to be compatible with Prometheus (#222)

2.10.0 (2017-11-14)

  • Support custom tracing headers (#176)
  • Add BaggageRestrictionManager (#178) and RemoteBaggageRestrictionManager (#182)
  • Do not coerce baggage keys to lower case (#196)
  • Log span name when span cannot be reported (#198)
  • Add option to enable gen128Bit for tracer (#193) and allow custom generator for high bits of trace ID (#219)

2.9.0 (2017-07-29)

  • Pin thrift <= 0.10 (#179)
  • Introduce a parallel interface ContribObserver (#159)

2.8.0 (2017-07-05)

  • Drop jaeger. prefix from jaeger.hostname process-level tag
  • Add options to set tracer tags

2.7.0 (2017-06-21)

  • Fix rate limiter balance #135 #140
  • Default client to send Jaeger.thrift #147
  • Save baggage in span #153
  • Move reporter.queueLength to the top of the struct to guarantee 64bit alignment #158
  • Support HTTP transport with jaeger.thrift #161

2.6.0 (2017-03-28)

  • Add config option to initialize RPC Metrics feature

2.5.0 (2017-03-23)

  • Split request latency metric by success/failure #123
  • Add mutex to adaptive sampler and fix race condition #124
  • Fix rate limiter panic #125

2.4.0 (2017-03-21)

  • Remove _ms suffix from request latency metric name #121
  • Rename all metrics to "request" and "http_request" and use tags for other dimensions #121

2.3.0 (2017-03-20)

  • Make Span type public to allow access to non-std methods for testing #117
  • Add a structured way to extract traces for logging with zap #118

2.2.1 (2017-03-14)

  • Fix panic caused by updating the remote sampler from adaptive sampler to any other sampler type (#111)

2.2.0 (2017-03-10)

  • Introduce Observer and SpanObserver (#94)
  • Add RPC metrics emitter as Observer/SpanObserver (#103)

2.1.2 (2017-02-27)

  • Fix leaky bucket bug (#99)
  • Fix zap logger Infof (#100)
  • Add tracer initialization godoc examples

2.1.1 (2017-02-21)

  • Fix inefficient usage of zap.Logger

2.1.0 (2017-02-17)

2.0.0 (2017-02-08)

  • Support Adaptive Sampling
  • Support 128bit Trace IDs
  • Change trace/span IDs from uint64 to strong types TraceID and SpanID
  • Add Zipkin HTTP B3 Propagation format support #72
  • Rip out existing metrics and use github.com/uber/jaeger-lib/metrics
  • Change API for tracer, reporter, sampler initialization

1.6.0 (2016-10-14)

  • Add Zipkin HTTP transport
  • Support external baggage via jaeger-baggage header
  • Unpin Thrift version, keep to master

1.5.1 (2016-09-27)

  • Relax dependency on opentracing to ^1

1.5.0 (2016-09-27)

  • Upgrade to opentracing-go 1.0
  • Support KV logging for Spans

1.4.0 (2016-09-14)

  • Support debug traces via HTTP header "jaeger-debug-id"