TTL 的 java agent 模式与dragonwell 的 eagerappcds有冲突 about transmittable-thread-local

[oldratlee]

@wangshiyu13 会不会加其它Java Agent（自动加bootclasspath）也有这个问题？

显式加上-Xbootclasspath/a:path/to/transmittable-thread-local-2.x.y.jar试试

[CodeWeaver13]

@wangshiyu13 会不会加其它java agent（会自动加bootclasspath）也有这个问题？

显式加上-Xbootclasspath/a:path/to/transmittable-thread-local-2.x.y.jar试试

测试过 otel 或者 skywalking 的 agent 没有冲突
显式加上 bootclasspath 会出现加载两次的问题，最后一样会报classpath mismatch

[oldratlee]

@wangshiyu13

• 请提供一个 极简、可运行、复现问题的 代码Demo工程。
• 包含 otel 或者 skywalking Agent 没有冲突。

---

推荐提供成一个单独的工程（GitHub repo）。这样可以：

• 方便大家能排查分析；只提供片段代码、运行问题概述，排查信息不足
• 方便分离不相关的业务实现内容，以及排除可能的业务使用问题
  如使用配置问题、其它业务代码的意外影响

[CodeWeaver13]

测试 demo 在这：https://github.com/wangshiyu13/ttl-dw-agent-demo

dragonwell-8.18.19文件夹内是 dw-jvm

java 启动参数
java -javaagent:/transmittable-thread-local-2.14.5.jar=ttl.agent.logger:STDOUT -javaagent:/agent-1.0-SNAPSHOT-all.jar -Xbootclasspath/a:/transmittable-thread-local-2.14.5.jar -XX:-OmitStackTraceInFastThrow -XX:+TraceClassPaths -Xquickstart:path=/root/alibaba.quickstart.sharedcache -Xquickstart:verbose -jar /ttl-agent-demo-1.0.0-SNAPSHOT.jar

报错内容如下：
root@common-ops-7b69b56c5f-sbjp2:/# java -javaagent:/transmittable-thread-local-2.14.5.jar=ttl.agent.logger:STDOUT -javaagent:/agent-1.0-SNAPSHOT-all.jar -Xbootclasspath/a:/transmittable-thread-local-2.14.5.jar -XX:-OmitStackTraceInFastThrow -XX:+TraceClassPaths -Xquickstart:path=/root/alibaba.quickstart.sharedcache -Xquickstart:verbose -jar /ttl-agent-demo-1.0.0-SNAPSHOT.jar [classpath: /ttl-agent-demo-1.0.0-SNAPSHOT.jar] cache path is set from -Xquickstart:path=/root/alibaba.quickstart.sharedcache Running as replayer [Bootstrap loader class path=/jw/dragonwell-8.18.19/jre/lib/resources.jar:/jw/dragonwell-8.18.19/jre/lib/rt.jar:/jw/dragonwell-8.18.19/jre/lib/sunrsasign.jar:/jw/dragonwell-8.18.19/jre/lib/jsse.jar:/jw/dragonwell-8.18.19/jre/lib/jce.jar:/jw/dragonwell-8.18.19/jre/lib/charsets.jar:/jw/dragonwell-8.18.19/jre/lib/jfr.jar:/jw/dragonwell-8.18.19/jre/classes:/transmittable-thread-local-2.14.5.jar:/jw/dragonwell-8.18.19/jre/lib/amd64/serverless/serverless-adapter.jar:/transmittable-thread-local-2.14.5.jar] [type=BOOT Expecting -Dsun.boot.class.path=/jw/dragonwell-8.18.19/jre/lib/resources.jar:/jw/dragonwell-8.18.19/jre/lib/rt.jar:/jw/dragonwell-8.18.19/jre/lib/sunrsasign.jar:/jw/dragonwell-8.18.19/jre/lib/jsse.jar:/jw/dragonwell-8.18.19/jre/lib/jce.jar:/jw/dragonwell-8.18.19/jre/lib/charsets.jar:/jw/dragonwell-8.18.19/jre/lib/jfr.jar:/jw/dragonwell-8.18.19/jre/classes:/transmittable-thread-local-2.14.5.jar:/jw/dragonwell-8.18.19/jre/lib/amd64/serverless/serverless-adapter.jar] [BOOT classpath mismatch, actual: -Dsun.boot.class.path=/jw/dragonwell-8.18.19/jre/lib/resources.jar:/jw/dragonwell-8.18.19/jre/lib/rt.jar:/jw/dragonwell-8.18.19/jre/lib/sunrsasign.jar:/jw/dragonwell-8.18.19/jre/lib/jsse.jar:/jw/dragonwell-8.18.19/jre/lib/jce.jar:/jw/dragonwell-8.18.19/jre/lib/charsets.jar:/jw/dragonwell-8.18.19/jre/lib/jfr.jar:/jw/dragonwell-8.18.19/jre/classes:/transmittable-thread-local-2.14.5.jar:/jw/dragonwell-8.18.19/jre/lib/amd64/serverless/serverless-adapter.jar:/transmittable-thread-local-2.14.5.jar] An error has occurred while processing the shared archive file. shared class paths mismatch (hint: enable -XX:+TraceClassPaths to diagnose the failure) Error occurred during initialization of VM Unable to use shared archive.

如果在 ttl 的 jar 包打包时去掉Boot-Class-Path，则可以指定 bootclasspath 运行，但是 agent 貌似未成功

[CodeWeaver13]

@oldratlee demo 已提供，地址https://github.com/wangshiyu13/ttl-dw-agent-demo