spark/streaming/StreamingContextState.java

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *    http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 package org.apache.spark.streaming;
0019
0020 import org.apache.spark.annotation.DeveloperApi;
0021
0022 /**
0023  * :: DeveloperApi ::
0024  *
0025  * Represents the state of a StreamingContext.
0026  */
0027 @DeveloperApi
0028 public enum StreamingContextState {
0029   /**
0030    * The context has been created, but not been started yet.
0031    * Input DStreams, transformations and output operations can be created on the context.
0032    */
0033   INITIALIZED,
0034
0035   /**
0036    * The context has been started, and been not stopped.
0037    * Input DStreams, transformations and output operations cannot be created on the context.
0038    */
0039   ACTIVE,
0040
0041   /**
0042    * The context has been stopped and cannot be used any more.
0043    */
0044   STOPPED
0045 }