...
| Tip |
|---|
|
- If you change the name of an execution plan after creating and saving it, remove the Storm topology generated with the previous name from the Apache Storm UI.
- The number of execution plans that are allowed to be created in a CEP distributed deployment is determined by the number of slots (i.e. workers) in the Storm cluster. Each execution plan by default requires at least one slot to deploy its Storm topology. This value can be changed by adding the following configuration to the <CEP_HOME>repository/conf/cep/storm/storm.yaml file.
topology.workers : <number>
For example, if you add the configuration topology.workers : 2, and the number of slots in the cluster is 10, then the maximum number of execution plans allowed to be created for the cluster is 5 (10/2). - At present, there is no way to control how bolts/spouts are spread across the Storm cluster. It is carried out in the Round Robin method by the default Storm Scheduler.
|
See the following samples for more information.