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[jetty-users] All Jetty 9.3.3 heads hang in SharedBlockingCallback$Blocker.block

Hi jetty-users,

We recently upgraded from Jetty 9.2.x to 9.3.3 and are now having our application
experience total lockup.

Symptoms are that any incoming HTTP requests (even those that are bogus
and should immediately 404) hang forever.  All QTP threads are stuck on
SharedBlockingCallback$Blocker.block.

It seems that our idle timeout is set to the default 30 seconds, but
requests hang much longer than that (gave up after ~5 minutes)
and the entire server makes no forward progress.

I've filed a bug and attached jstack and Jetty "dumpStdErr" output.
Hoping that anyone out there might be able to help, even some clues
as to next debugging steps would be great -- this is happening to our server
on an almost daily basis and is very frustrating.

https://bugs.eclipse.org/bugs/show_bug.cgi?id=478923

Thanks a bunch,
Steven




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