/*
* 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.flink.runtime.jobgraph;
/**
* The ScheduleMode decides how tasks of an execution graph are started.
*/
public enum ScheduleMode {
/** Schedule tasks lazily from the sources. Downstream tasks are started once their input data are ready */
LAZY_FROM_SOURCES,
/** Schedules all tasks immediately. */
EAGER;
/**
* Returns whether we are allowed to deploy consumers lazily.
*/
public boolean allowLazyDeployment() {
return this == LAZY_FROM_SOURCES;
}
}