spark StreamingContextState 源码
spark StreamingContextState 代码
文件路径：/streaming/src/main/java/org/apache/spark/streaming/StreamingContextState.java
/*
* 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.spark.streaming;
import org.apache.spark.annotation.DeveloperApi;
/**
* :: DeveloperApi ::
*
* Represents the state of a StreamingContext.
*/
@DeveloperApi
public enum StreamingContextState {
/**
* The context has been created, but not been started yet.
* Input DStreams, transformations and output operations can be created on the context.
*/
INITIALIZED,
/**
* The context has been started, and been not stopped.
* Input DStreams, transformations and output operations cannot be created on the context.
*/
ACTIVE,
/**
* The context has been stopped and cannot be used any more.
*/
STOPPED
}
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