Version 8.20.0

New features and improvements

• Support for CRaC 2250

• Support for JDK24 2284

• Add sampling options when an inbound traceparent exists 2279

  • These options define how the agent should handle sampling of spans, depending on sampling decisions that were made for their parent span by an upstream entity. The configuration options remote_parent_sampled and remote_parent_not_sampled specify what to do in the case the parent span was sampled or not sampled, respectively. See the documentation for full configuration details.

• Support for Undertow as a stand-alone module 2269

  • This instrumentation is disabled by default to avoid conflicts with existing Wildfly instrumentation. To enable this instrumentation for stand-alone Undertow server apps, use the configuration setting:

   class_transformer:
     com.newrelic.instrumentation.undertow-server-1.1.0:
       enabled: true

• Support for Couchbase Client 2203

  • If the Couchbase Client Experimental Module is currently in use, remove it from your extensions directory before upgrading to this version of the Java Agent.

Fixes

• Fix netty 'Unknown' transactions 2274

  • This fix moves previous netty instrumentation changes behind a feature flag, which provides additional visibility in some cases involving HTTP2 transactions. To reenable this granularity (at the possible cost of seeing ‘Unknown’ transactions), use the config setting:

    netty:
      http2:
        frame_read_listener:
          start_transaction: true

• Refactor AWS docker id fetch to use 5s timeout 2275

• Feature flag to apply Kotlin ArrayIndexOutOfBoundsException fix to all methods 2307

  • This fix addresses errors that may be seen when running the Java Agent in an environment where Kotlin suspends functions are used. To use this fix, set the system property -Dnewrelic.config.class_transformer.clear_return_stacks=true

• Prevent cache lock for long DB statement parsing 2294

• Add config to specify whether java.sql is loaded by platform classloader 2267

Deprecations

The following instrumentation modules are deprecated and will be removed in the next major release:

• aws-wrap-0.7.0
• java.completable-future-jdk8
• play-2.3
• netty-3.4
• Struts v1

New Contributors

• @gsidhwani-nr made their first contribution in #2280

Full Changelog: v8.19.0...v8.20.0