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Java agent release notesRSS

March 2, 2021
Java agent v6.4.2

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Fixes an issue that could cause some instrumentation modules (e.g. jax-rs-1.0) to have a WeaveViolation and not apply properly.

February 2, 2021
Java agent v6.4.1


Fixes an issue in 6.4.0 where spans would not get sent to Infinite Tracing.

January 27, 2021
Java agent v6.4.0


  • There is an issue with this agent release that could lead to spans not being sent to Infinite Tracing. Please use 6.4.1 instead.

New Features and Improvements:


  • Updated the Java agent’s snakeyaml dependency to 1.27.
  • In some environments the jar collector service could lead to high CPU utilization at application startup. The agent now provides a configurable rate limiter, with a reasonable default, for processing jars detected in the application’s environment. See documentation here.

Support statement:

  • New Relic recommends that you upgrade the agent regularly to ensure that you're getting the latest features and performance benefits. Additionally, older releases will no longer be supported when they reach end-of-life.

December 17, 2020
Java agent v6.3.0


  • Spring Webflux
    • The Java agent now supports Spring Webflux versions 5.3+
    • Added reactor-netty.errors.enabled configuration to allow disabling error reporting in Subscriber::onError.
  • Scala 2.13
    • The Java agent now provides support for Scala 2.13 and frameworks compiled with 2.13 Akka-http, Play


  • The netty-4.0.8 instrumentation would sometimes not start a Transaction on channelRead, potentially affecting instrumentation dependent on it including: Spring, Akka and Play
  • Updated the Java agent’s Apache HttpClient dependency to 5.13
  • Spring Webclient could report the wrong URL when multiple HTTP calls to several URLs occurred in parallel

November 17, 2020
Java agent v6.2.1


  • Fixes an issue where Spring-Webflux applications with endpoints returning Flux or empty content could become unresponsive

November 10, 2020
Java agent v6.2.0

New features

return serviceA.getData()
.map(service -> Response.builder().service(service).build())



Support statement:

  • New Relic recommends that you upgrade the agent regularly to ensure that you're getting the latest features and performance benefits. Additionally, older releases will no longer be supported when they reach end-of-life.

September 30, 2020
Java agent v6.1.0


Java 15

  • The New Relic Java agent is now fully compatible with version 15 of the OpenJDK and Hotspot JDKs.




  • The Java agent now includes the newrelic.com SSL certificate. In previous agent versions, applications using a custom Truststore would have to provide their certificate or use the use_private_ssl configuration which was removed in 6.0.0.
  • Fixed an issue where applications could fail to start due to the agent attempting to access the JMX MBean server before it was initialized.

August 26, 2020
Java agent v6.0.0



Note re: certificate bundle use_private_ssl

This release removed the certificate bundle from the agent artifact. Users previously using use_private_ssl should now use the ca_bundle_path configuration directive. For more information, see the Java v6.0.0 release on GitHub.

July 27, 2020
Java agent v5.14.0


  • Agent Extensions The Java agent now provides a configuration to disable reloading extensions during runtime. extensions: reload_modified: false

  • Spring Webflux The Java agent now provides updated instrumentation for reactor-netty-0.8.0+ to link the Transaction across threads. In previous agent versions, Transactions would be named /NettyDispatcher.

  • Logging format To make the agent log easier to sort and read across locales, the date/time format has changed. The new format is log4j's ISO8610_OFFSET_DATE_TIME_HHMM and it is rendered like this in all locales:

    2020-07-10T08:33:00,328-0700 [9550 1] com.newrelic INFO: New Relic Agent: Loading configuration file "lib/./newrelic.yml"

    2020-07-10T08:33:00,423-0700 [9550 1] com.newrelic INFO: Using default collector host: collector.newrelic.com

    All other data on the log line remains the same.


  • Solr instrumentation could throw a NullPointerException when Query.toString() returned null.

June 16, 2020
Java agent v5.13.0


  • Distributed tracing: With distributed tracing spans and/or Infinite Tracing, the Java agent will now incorporate additional information from the transaction event on to the root span event of the transaction.

  • New TracedMethod.addCustomAttribute(...) APIs have been added for adding attributes directly to spans.

    Note: Any attribute include or exclude settings specific to transaction events should be applied to your span attributes configuration or your global attributes configuration.

  • The Java agent now uses AWS's IMDS v2 to gather instance information.


  • Jetty JMX metrics would not report when running embedded in Spring Boot.
  • Local configuration settings could revert to the default following an agent reconnect.

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