| /* |
| * 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. |
| */ |
| package org.apache.beam.runners.dataflow.worker; |
| |
| /** |
| * The optimizer may split run the user combiner in 3 separate phases (ADD, MERGE, and EXTRACT), on |
| * separate VMs, as it sees fit. The CombinerPhase dictates which DoFn is actually running in the |
| * worker. |
| */ |
| // TODO: These strings are part of the service definition, and |
| // should be added into the definition of the ParDoInstruction, |
| // but the protiary definitions don't allow for enums yet. |
| public class CombinePhase { |
| public static final String ALL = "all"; |
| public static final String ADD = "add"; |
| public static final String MERGE = "merge"; |
| public static final String EXTRACT = "extract"; |
| } |
