Merge pull request #22075 from jbedell-newrelic/patch-9

8.21.0 MemoryLeak changes

Author: PallaviWrite

src/content/docs/release-notes/agent-release-notes/java-release-notes/java-agent-8210.mdx

@@ -7,6 +7,11 @@ features: [“Enhances visibility into Reactor flatMap calls”, ”Adds new ins
 bugs: [“Fixes the distributed_tracing.sampler config”, “Fixes an Illegal Access Error that can occur when using Scala 2.12 and JDK 11”, “Fixes the netty.http2.frame_read_listener.start_transaction configuration”, “Adds a restriction on when to add distributed trace headers for SQS messages”, “Allows the org.crac JAR to be shadowed”, “Backports NullPointerException fix to older versions of vertx-core instrumentation”, “Prevents excessive transaction segments from being created by HttpUrlConnection method calls”]
 security: [“Upgrades the com.newrelic.agent.java:infinite-tracing-protobuf for better security with infinite tracing”, “Replaces snakeyaml with com.konloch:safeyaml to address a security vulnerability”]
 ---
+<Callout variant="caution">
+**Known issues**: This release has a known issue with certain uses of Netty Reactor that can cause memory leaks.
+Please consider using another version.
+</Callout>
+
 <ButtonGroup>
   <ButtonLink
     role="button"