We have upgraded AEM to 6.5.7.
After upgrade we haev noticed that publisher is getting down and once we restart the instance then issue getting resolved.
When am checking the logs i am not able to find anything.
When am going through the thread dumps i have seen below :
It holds the lock and this makes the threads count increase and this might have made the application unresponsive.
at firstname.lastname@example.org/java.lang.ref.Reference.waitForReferencePendingList(Native Method)
Could you please let me know if any one has any comments for this issue getting resolved.
This is a known issue in AEM 6.5.7
Deadlock in the SCR Component Registry when many threads are blocked due to org.apache.felix.scr.impl.ComponentRegistry timer. As a result, Experience Manager stops responding for an indefinite time (GRANITE-33125,FELIX-6252).
You need to upgrade it to either 188.8.131.52 or there is a hotfix available which needs to be installed to make it work.
Let me know if you need the hotfix.
Its happening in all the publishers.
But we have 4 publishers in production.We are facing the issue one at a time.