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DDF Becomes Unresponsive to Incoming Requests

DDF Becomes Unresponsive to Incoming Requests

Owned by Shaun Morris
Last updated: May 24, 2013Version comment

Symptoms

  • Multiple java.exe processes running indicating more than one

    DDF

    instance is running. This can be caused by not shutting down another

    DDF

    .

DDF

becomes Unresponsive to Incoming Requests

 

Problem:

DDF

Becomes Unresponsive to Incoming Requests. An example of what the log file will look like is located below:

 

Feb 7, 2013 10:51:33 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking
Feb 7, 2013 10:51:33 AM org.apache.karaf.main.Main doLock
INFO: Waiting for the lock ...
Feb 7, 2013 10:51:33 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking
Feb 7, 2013 10:51:33 AM org.apache.karaf.main.Main doLock
INFO: Waiting for the lock ...
Feb 7, 2013 10:51:34 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking
Feb 7, 2013 10:51:34 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking
Feb 7, 2013 10:51:35 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking
Feb 7, 2013 10:51:35 AM org.apache.karaf.main.SimpleFileLock lock
INFO: locking

 

Possible Solutions:

  • Wait for proper shutdown of

    DDF

    prior to starting a new instance
  • Verify running java.exe are not

    DDF

    (e.g. kill/close if necessary)
  • Utilize automated start/stop scripts to run

    DDF

    as a service.