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  1. JBoss Enterprise Application Platform
  2. JBEAP-15737

[GSS](7.2.z) WFLY-10150 - EJB race condition can cause client to be in awaitResponse while server is done

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      For use case of servlets invoking remote ejbs, specify a max-concurrent-requests filter such that it is about 10 less than the max number of EJB threads on the remote server.

      /profile=client/subsystem=undertow/configuration=filter/request-limit=mylimit:add(max-concurrent-requests=118)
/profile=client/subsystem=undertow/server=default-server/host=default-host/filter-ref=mylimit:add()

      Another workaround is to specify the EJB thread pool size to be greater than the number of max concurrent client requests

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      For use case of servlets invoking remote ejbs, specify a max-concurrent-requests filter such that it is about 10 less than the max number of EJB threads on the remote server. /profile=client/subsystem=undertow/configuration=filter/request-limit=mylimit:add(max-concurrent-requests=118) /profile=client/subsystem=undertow/server= default -server/host= default -host/filter-ref=mylimit:add() Another workaround is to specify the EJB thread pool size to be greater than the number of max concurrent client requests
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      Reproducer attached will configure a domain mode with 2 server instances and a jmeter script will provide load.

      unzip -d $JBOSS_HOME/ reproducer-setup.zip
      cd $JBOSS_HOME/
      ./setup.sh .
      ./bin/domain.sh

      Start jmeter and open $JBOSS_HOME/testEJBIssue.jmx
      Click run
      tail -f domain/servers/server/log/server.log
      Once it stops logging, take thread dumps

      Show
      Reproducer attached will configure a domain mode with 2 server instances and a jmeter script will provide load. unzip -d $JBOSS_HOME/ reproducer-setup.zip cd $JBOSS_HOME/ ./setup.sh . ./bin/domain.sh Start jmeter and open $JBOSS_HOME/testEJBIssue.jmx Click run tail -f domain/servers/server/log/server.log Once it stops logging, take thread dumps

      With a client jboss server1 that has a client servlet that invokes a remote EJB on jboss server2 configured using server to server config in the standalone.xml/domain.xml outbound remoting connection, the client side can get stuck in awaitResponse while the server side has finished processing.

        1. logs.zip
          19 kB
        2. remote-protocol-thread-dumps.tar.xz
          15 kB
        3. reproducer.jar
          17 kB
        4. reproducer.jar
          25 kB
        5. reproducer-setup.zip
          33 kB
        6. run-reproducer.sh
          0.4 kB
        7. setup-remoting.cli
          1 kB
        8. thread-dumps.zip
          117 kB
        9. thread-pid-43020-date-2018-10-20-00-08-0.log
          50 kB

              tadamski@redhat.com Tomasz Adamski
              rhn-support-bmaxwell Brad Maxwell
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                Created:
                Updated:
                Resolved: