Nicolas Filotto created CAMEL-20199:
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Summary: Complete support of Virtual Threads
Key: CAMEL-20199
URL: https://issues.apache.org/jira/browse/CAMEL-20199
Project: Camel
Issue Type: Improvement
Components: came-core
Reporter: Nicolas Filotto
For a full support of Virtual Threads, several sub-tasks need to be done:
* Avoid Lengthy and Frequent Pinning by replacing synchronized blocks with
ReentrantLocks (use the option {{-Djdk.tracePinnedThreads=ful}} to print stack
traces when thread block while pinned)
* Don't Cache Expensive Reusable Objects in Thread-Local Variables by avoiding
thread locals when possible since when using Virtual Threads, the objects will
never be reused so if the thread-local variables are never reset, it will end
up with an OOME.
* Use Semaphores to Limit Concurrency instead of relying on the size of the
thread pool when applicable
* Allow to expose {{ThreadPerTaskExecutor}} through JMX indeed so far it is
limited to {{ThreadPoolExecutor}}
References https://docs.oracle.com/en/java/javase/21/core/virtual-threads.html
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