Cluster Manager Configuration 

Use

The J2EE Engine Cluster Manager is responsible for handling the elements in the cluster. It updates the information about the status of each cluster element and the services running on it.

Features

Cluster Elements

There are two different cluster element types – dispatcher and server. These elements are organized in groups according to their GroupID.

You can use the Cluster Manager to configure the properties of each element in the cluster. For more information, see Configuring Cluster Elements.

Barriers

The startup/shutdown logic of the J2EE Engine service framework is developed in the manner of a full parallelism, which means that the cluster elements are starting up and shutting down immediately without waiting for each other. An option is provided to configure the startup/shutdown of the J2EE Engine cluster to be serialized. This means that there is a designed barrier in the Cluster Manager that permits only one cluster element to start up or shut down at a single moment. The barrier is developed to be customizable. It can be configured from one extreme to another, that is, from serialized startup/shutdown to fully parallel functionality.

For more information, see Managing Cluster Elements Startup and Shutdown.

 

See also:

SAP Java Enterprise Runtime in the Architecture Manual