| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| = Cluster Groups |
| |
| :javaFile: {javaCodeDir}/ClusterAPI.java |
| |
| The `ClusterGroup` interface represents a logical group of nodes, which can be used in many of Ignite's APIs when you want to limit the scope of specific operations to a subset of nodes (instead of the whole cluster). For example, you may wish to deploy a service only on remote nodes or execute a job only on the set of nodes that have a specific attribute. |
| //// |
| TODO: explain attributes |
| //// |
| TIP: Note that the `IgniteCluster` interface is also a cluster group which includes all the nodes in the cluster. |
| |
| You can limit job execution, service deployment, messaging, events, and |
| other tasks to run only on a specific set of node. For example, here is |
| how to broadcast a job only to remote nodes (excluding the local node). |
| |
| [tabs] |
| -- |
| tab:Java[] |
| [source,java] |
| ---- |
| include::{javaFile}[tag=remote-nodes,indent=0] |
| ---- |
| tab:C#/.NET[] |
| [source,csharp] |
| ---- |
| include::code-snippets/dotnet/ClusterGroups.cs[tag=broadcastAction,indent=0] |
| ---- |
| tab:C++[unsupported] |
| -- |
| |
| |
| For convenience, Ignite comes with a number of predefined cluster groups. |
| |
| |
| [tabs] |
| -- |
| tab:Java[] |
| [source,java] |
| ---- |
| include::{javaFile}[tag=group-examples,indent=0] |
| ---- |
| tab:C#/.NET[] |
| [source,csharp] |
| ---- |
| include::code-snippets/dotnet/ClusterGroups.cs[tag=clusterGroups,indent=0] |
| ---- |
| tab:C++[unsupported] |
| -- |
| |
