opentelemetry-exporter-jaeger not found on classpath

[SirTimme]

Hi everyone,

im trying to setup auto instrumentation with the java agent and a jaeger backend. Im getting this error:

OpenTelemetry Javaagent failed to start
io.opentelemetry.sdk.autoconfigure.spi.ConfigurationException: otel.traces.exporter set to "jaeger" but opentelemetry-exporter-jaeger not found on classpath. Make sure to add it as a dependency.
        at io.opentelemetry.sdk.autoconfigure.SpanExporterConfiguration.configureExporter(SpanExporterConfiguration.java:95)
        at io.opentelemetry.sdk.autoconfigure.SpanExporterConfiguration.configureSpanExporters(SpanExporterConfiguration.java:67)
        at io.opentelemetry.sdk.autoconfigure.TracerProviderConfiguration.configureTracerProvider(TracerProviderConfiguration.java:55)
        at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdkBuilder.build(AutoConfiguredOpenTelemetrySdkBuilder.java:464)
        at io.opentelemetry.javaagent.tooling.OpenTelemetryInstaller.installOpenTelemetrySdk(OpenTelemetryInstaller.java:29)
        at io.opentelemetry.javaagent.tooling.AgentInstaller.installBytebuddyAgent(AgentInstaller.java:122)
        at io.opentelemetry.javaagent.tooling.AgentInstaller.installBytebuddyAgent(AgentInstaller.java:102)
        at io.opentelemetry.javaagent.tooling.AgentStarterImpl.start(AgentStarterImpl.java:99)
        at io.opentelemetry.javaagent.bootstrap.AgentInitializer$1.run(AgentInitializer.java:53)
        at io.opentelemetry.javaagent.bootstrap.AgentInitializer$1.run(AgentInitializer.java:47)
        at io.opentelemetry.javaagent.bootstrap.AgentInitializer.execute(AgentInitializer.java:64)
        at io.opentelemetry.javaagent.bootstrap.AgentInitializer.initialize(AgentInitializer.java:46)
        at io.opentelemetry.javaagent.OpenTelemetryAgent.startAgent(OpenTelemetryAgent.java:57)
        at io.opentelemetry.javaagent.OpenTelemetryAgent.premain(OpenTelemetryAgent.java:45)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:560)
        at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:572)

My dependencies are the following:

plugins {
    id("java")
    id("org.springframework.boot") version "3.2.4"
}

repositories {
    mavenCentral()
}

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-web:3.2.4")
    implementation("io.opentelemetry:opentelemetry-exporter-jaeger:1.34.1")
    implementation("io.opentelemetry:opentelemetry-sdk-extension-autoconfigure:1.36.0")
}

My environment variables are set as follows:

OTEL_EXPORTER_JAEGER_ENDPOINT=http://localhost:14250
OTEL_METRICS_EXPORTER=none
OTEL_TRACES_EXPORTER=jaeger
OTEL_SERVICE_NAME=open-telemetry-demo

Im using the agent version 2.2.0. What could be the cause for the error?

Greetings,
Tim

[SirTimme]

Update:
i tested different versions of the java agent and the newest functioning version is 1.32.1. It breaks with 1.33.0 and all newer versions. Was there a breaking change in the behaviour?

[laurit]

As described in the release notes jaeger exporter has been removed. Jaeger nowadays recommends using OTLP https://opentelemetry.io/blog/2022/jaeger-native-otlp/.

[SirTimme]

Thanks for the reply! I must've skipped over that 🤦🏻‍♂️
I managed to make it work by pointing the OTEL_EXPORTER_OTLP_ENDPOINT variable to my jaeger container.