In the case of a connectionFailed() event, such as defined in the ClientListener interface, the JMX connection thread held by the JPPF connection is not terminated. This leads to a thread leak in case of frequent disconnections from the driver, or when the client uses a large pool of connections to the driver.

A workaround is to close the JMX connection (and terminate the associated thread) from a ClientListener as in the following code:

JPPFClient client = new JPPFClient();
client.addClientListener(new ClientListener() {
  @Override
  public void newConnection(final ClientEvent event) {
  }
  @Override
  public void connectionFailed(final ClientEvent event) {
    AbstractJPPFClientConnection c = (AbstractJPPFClientConnection) event.getConnection();
    if (c.getJmxConnection() != null) {
      try {
        c.getJmxConnection().close();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }
});