aajisaka opened a new pull request, #8739: URL: https://github.com/apache/hadoop/pull/8739
### Description of PR libhdfs registers a pthread TLS destructor, hdfsThreadDestructor, that detaches the current thread from the JVM whenever it finds a cached JNIEnv. It does so regardless of who attached the thread. When the JVM (or an embedding application) attached the thread, the JNIEnv it still holds may already have been freed by the time the destructor runs, so dereferencing it reads freed memory (heap-use-after-free, SIGSEGV). Track in ThreadLocalState whether libhdfs attached the thread itself, determined in getGlobalJNIEnv via GetEnv before attaching, and skip the JNI detach in hdfsThreadDestructor for threads libhdfs did not attach. The original patch is authored by Jeremy Coulon. Assisted-by: OpenCode (GLM-5.3-Flash) JIRA: HDFS-16021 ### How was this patch tested? The same fix is reviewed in Apache DataFusion Comet side: https://github.com/apache/datafusion-comet/pull/5890 ### For code changes: - [x] Does the title of this PR start with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [ ] Object storage: Have the integration tests been executed and the endpoint declared according to the connector-specific documentation? *Note: Automated CI testing doesn't cover all cases so manual testing with cloud storage is still required.* - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files? ### AI Tooling If an AI tool was used: - [x] The PR includes the phrase "Contains content generated by <tool>" where <tool> is the name of the AI tool used. - [x] My use of AI contributions follows the ASF legal policy https://www.apache.org/legal/generative-tooling.html -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
