the "java_pidXX" problem

[godtroop-github]

hey, I' m using async-profiler when [/tmp/.java_pidXX] file is missing, that doesn't work obviously. And I found that message from stack overflow:

"/tmp/.java_pid socket is used by HotSpot [Dynamic Attach](http://openjdk.java.net/groups/hotspot/docs/Serviceability.html#battach) mechanism. It is the way how jstack and other utilities communicate with JVM.

You cannot change the path - it is hardcoded in JVM source code. Neither you can force JVM to regenerate it, because the Attach Listener is initialized only once in HotSpot lifetime."1

https://stackoverflow.com/questions/32198820/why-jstack-not-working-when-the-tmp-java-pidnum-socket-file-has-been-deleted

So I'm thinking is there any possible way(may be a tricky/geek way) that we can recover or regenerate this file to use attach tools again. As we know, to keep the problematic jvm alive, usually It's very helpful to shoot the real trouble in time.

Thanks for any reply : )

[apangin]

As a result of the fix for JDK-8225690, JVM now automatically re-creates .java_pid attach socket if has been deleted.

Please update your JDK version. The fix is available starting from JDK 14 / JDK 11.0.13 / JDK 8u332

[godtroop-github]

Nice，that would be great！Thanks.