wang-jiahua opened a new pull request, #10566: URL: https://github.com/apache/rocketmq/pull/10566
### Which Issue(s) This PR Fixes Fixes #10288 ### Brief Description ConsumeQueue.putMessagePositionInfo() accesses MappedFile without holding a reference count. A concurrent cleanExpiredConsumeQueue can destroy() the MappedFile (unmapping its buffer) while the writer is still using it, causing SIGSEGV in JIT-compiled Unsafe.copyMemory. Fix: Call mappedFile.hold() before accessing the buffer and release() in a finally block, following the same pattern used in DefaultMappedFile.getData(). Also protect the fillPreBlank call in initializeWithOffset. ### How Did You Test This Change Existing ConsumeQueueTest (17 tests) all pass. The fix was validated during server benchmarking where the baseline broker crashed with SIGSEGV in ReputMessageService at ConsumeQueue.putMessagePositionInfo — exactly the crash signature reported in #10288. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
