AEM 6.4 + SP2 - Server hang issue very frequently | Community
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Praveen_RV
Praveen_RV
Level 2
February 5, 2019
Solved

AEM 6.4 + SP2 - Server hang issue very frequently

  • February 5, 2019
  • 3 replies
  • 1408 views

Hi Team,

We are using AEM 6.4 + SP2 on Linux environment and observing server hanging issues very frequently 2-3 times per week with the below thread block stack trace.

Is it a problem with Jetty or anyother?

java.lang.Thread.State: RUNNABLE

at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)

at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)

at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)

- locked <0x00000005c1e8dd38> (a java.lang.Object)

at org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:369)

at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:639)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:762)

at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:680)

at java.lang.Thread.run(Thread.java:748)

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    Best answer by joerghoh

    This is nothing to worry about this marked lock, as this is a thread ready to pick up an incoming request, also the thread state is RUNNABLE.

    Jörg

    3 replies

    joerghoh
    Adobe Employee
    joerghohAdobe EmployeeAccepted solution
    Adobe Employee
    February 5, 2019

    This is nothing to worry about this marked lock, as this is a thread ready to pick up an incoming request, also the thread state is RUNNABLE.

    Jörg

      smacdonald2008
      smacdonald2008
      Level 10
      February 5, 2019

      Nice response!

      Praveen_RV
      Praveen_RVAuthor
      Level 2
      February 6, 2019

      Thanks Jorg for your reply, may be my question was incomplete.

      you are right, this thread is at runnable condition and ready to accept any incoming requests. but there are other threads in BLOCKED state for this thread to release the lock on java.lang.Object.

      Please let me know for any possible way to diagnose this.

      java.lang.Thread.State: BLOCKED (on object monitor)

      at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:233)

      - waiting to lock <0x00000005c1e8dd38> (a java.lang.Object)

      at org.eclipse.jetty.server.ServerConnector.accept(ServerConnector.java:369)

      at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:639)

      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:762)

      at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:680)

      at java.lang.Thread.run(Thread.java:748)

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