On 9/9/18 12:16 AM, Mark Thomas wrote:
On 08/09/18 19:36, Mark Thomas wrote:
<snip/>
For the "- parking to wait for <0x00000006471cd7d8> (a
java.util.concurrent.locks.ReentrantLock$NonfairSync)" there are 155.
Though I see no other messages with that object in the thread dump.
Has anyone run into this? It seems like some sort of deadlock.
Do you still have the full thread dump? Can you post it somewhere (where
we can look at it)?
Thanks. Lots of threads waiting for the lock. None holding it. That is
very strange.
Some variation of this?
https://confluence.atlassian.com/jirakb/jira-applications-stall-due-to-stackoverflowerror-exception-941601100.html
Here is one thing to look at. Note that the take request from
borrowObject comes from
p = objectDeque.getIdleObjects().pollFirst();
This LinkedBlockingDeque method does not register the thread as
waiting on the notEmpty condition in LinkedBlockingDeque the way
that say
p = objectDeque.getIdleObjects().pollFirst(
borrowMaxWaitMillis,
TimeUnit.MILLISECONDS);
does.
Phil
Mark
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