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  1. JBoss Enterprise Application Platform
  2. JBEAP-24271

Clustering: FATAL exception in heavyread scenario

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    Description

      In the heavyread scenario (4 nodes cluster using web replicated cache) we noticed the following exception in the server logs (see wlf_20225405-085430-wildfly-service-1-server.log ):

      2022-12-05 09:12:22,021 FATAL [org.jgroups.protocols.TCP] (Connection.Receiver [10.0.154.188:38511 - 10.0.153.226:7600]-14,ejb,wildfly1) wildfly1: thread pool is full (max=100, active=200); thread dump (dumped once, until thread_dump is reset):
      "Reference Handler" #2 prio=0 tid=0x2 nid=NA runnable
         java.lang.Thread.State: RUNNABLE
      	at java.base@11.0.16/java.lang.ref.Reference.waitForReferencePendingList(Native Method)
      	at java.base@11.0.16/java.lang.ref.Reference.processPendingReferences(Reference.java:241)
      	at java.base@11.0.16/java.lang.ref.Reference$ReferenceHandler.run(Reference.java:213)
      

      Cluster nodes are configured as follows:

      embed-server --server-config=standalone-ha.xml
      if (outcome != success) of /subsystem=jgroups:read-attribute(name=default-stack)
      /subsystem=jgroups/channel=ee:write-attribute(name=stack,value=tcp)
      else
      /subsystem=jgroups:write-attribute(name=default-stack,value=tcp)
      /subsystem=jgroups/channel=ee:write-attribute(name=stack,value=tcp)
      end-if
      /subsystem=infinispan/cache-container=web/replicated-cache=testRepl:add()
      /subsystem=infinispan/cache-container=web/replicated-cache=testRepl/component=locking:write-attribute(name=isolation, value=REPEATABLE_READ)
      /subsystem=infinispan/cache-container=web/replicated-cache=testRepl/component=transaction:write-attribute(name=mode, value=BATCH)
      /subsystem=infinispan/cache-container=web/replicated-cache=testRepl/store=file:add()
      /subsystem=infinispan/cache-container=web:write-attribute(name=default-cache, value=testRepl)
      

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              pferraro@redhat.com Paul Ferraro
              tborgato@redhat.com Tommaso Borgato
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