[Bug] Bug title 使用jdk17启动mqcontroller报错

[qianduoduo188]

Before Creating the Bug Report

• I found a bug, not just asking a question, which should be created in GitHub Discussions.

• I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.

• I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.

Runtime platform environment

本地虚拟机：centos9
java环境jdk17

RocketMQ version

mq版本：5.5.0

JDK Version

BellSoft jdk17

Describe the Bug

启动mqcontroller报错
java.lang.reflect.InaccessibleObjectException: Unable to make field private java.lang.String java.lang.StackTraceElement.classLoaderName accessible: module java.base does not "opens java.lang" to unnamed module @32993f6f
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
at com.caucho.hessian.io.JavaDeserializer.getFieldMap(JavaDeserializer.java:329)
at com.caucho.hessian.io.JavaDeserializer.(JavaDeserializer.java:97)
at com.caucho.hessian.io.StackTraceElementDeserializer.(StackTraceElementDeserializer.java:57)
at com.caucho.hessian.io.SerializerFactory.(SerializerFactory.java:589)
at org.apache.rocketmq.controller.impl.manager.ReplicasInfoManager.(ReplicasInfoManager.java:79)
at org.apache.rocketmq.controller.impl.DLedgerController.(DLedgerController.java:132)
at org.apache.rocketmq.controller.ControllerManager.initialize(ControllerManager.java:122)
at org.apache.rocketmq.controller.ControllerStartup.start(ControllerStartup.java:134)
at org.apache.rocketmq.controller.ControllerStartup.main0(ControllerStartup.java:56)
at org.apache.rocketmq.controller.ControllerStartup.main(ControllerStartup.java:49)

Steps to Reproduce

使用bellsoft启动的mqcontroller

What Did You Expect to See?

解决方案

What Did You See Instead?

xx

Additional Context

No response

[RockteMQ-AI]

🤖 AI Bot Analysis

Issue Type: Bug (confirmed)
Component: Controller / Distribution startup scripts
Severity: Medium — affects all JDK 9+ users starting mqcontroller

Root Cause

ReplicasInfoManager declares a static SerializerFactory (Hessian) field. During class loading, Hessian's SerializerFactory.<clinit> registers StackTraceElementDeserializer, which uses Field.setAccessible(true) on private fields of java.lang.StackTraceElement (e.g. classLoaderName, moduleName).

JDK 9+ module system (JPMS) blocks this reflective access by default, causing InaccessibleObjectException at startup.

Proposed Fix

Add --add-opens java.base/<package>=ALL-UNNAMED JVM flags for JDK >= 9 in the startup scripts:

File	Change
distribution/bin/runserver.sh	Add 10 --add-opens flags in choose_gc_options() JDK >= 9 branch (covers mqcontroller)
distribution/bin/runbroker.sh	Same flags in choose_gc_options() JDK >= 9 branch
distribution/bin/tools.sh	Add JDK version detection + same flags

Packages opened: java.lang, java.lang.reflect, java.io, java.math, java.net, java.nio, java.text, java.time, java.util, java.util.concurrent

Workaround (for now)

Add the following to your JVM startup options:

--add-opens java.base/java.lang=ALL-UNNAMED

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This issue has been verified against the codebase. A PR with the fix is being prepared.
Maintainers: reply /approve to proceed with the PR, /revise to request changes, or /reject to skip.

[RockteMQ-AI]

⏰ Feedback Timeout

No feedback was received within the 72-hour window since the fix spec was posted.

Timeline:

• Spec posted: 2026-07-12T14:07:48Z
• Timeout at: 2026-07-15T14:07:48Z
• Current time: 2026-07-15T15:18:06Z

The proposed fix will not be pursued further at this time. If the issue is still relevant and you would like to proceed, please leave a comment and we will re-evaluate.

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