org.apache.flink.runtime.executiongraph.failover.flip1.RestartBackoffTimeStrategy Maven / Gradle / Ivy
/*
* 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.executiongraph.failover.flip1;
/**
* Strategy to decide whether to restart failed tasks and the delay to do the restarting.
*/
public interface RestartBackoffTimeStrategy {
/**
* Returns whether a restart should be conducted.
*
* @return whether a restart should be conducted
*/
boolean canRestart();
/**
* Returns the delay to do the restarting.
*
* @return the delay to do the restarting
*/
long getBackoffTime();
/**
* Notify the strategy about the task failure cause.
*
* @param cause of the task failure
*/
void notifyFailure(Throwable cause);
// ------------------------------------------------------------------------
// factory
// ------------------------------------------------------------------------
/**
* The factory to instantiate {@link RestartBackoffTimeStrategy}.
*/
interface Factory {
/**
* Instantiates the {@link RestartBackoffTimeStrategy}.
*
* @return The instantiated restart strategy.
*/
RestartBackoffTimeStrategy create();
}
}