Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/5207#discussion_r160125564 --- Diff: flink-clients/src/main/java/org/apache/flink/client/program/rest/retry/ExponentialWaitStrategy.java --- @@ -0,0 +1,45 @@ +/* + * 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.client.program.rest.retry; + +import static org.apache.flink.util.Preconditions.checkArgument; + +/** + * {@link WaitStrategy} with exponentially increasing sleep time. + */ +public class ExponentialWaitStrategy implements WaitStrategy { + + private final long initialWait; + + private final long maxWait; + + public ExponentialWaitStrategy(final long initialWait, final long maxWait) { + checkArgument(initialWait > 0, "initialWait must be positive, was %s", initialWait); + checkArgument(maxWait > 0, "maxWait must be positive, was %s", maxWait); + this.initialWait = initialWait; + this.maxWait = maxWait; --- End diff -- Should `maxWait` be larger than `initialWait`? Otherwise one would see a decrease in the waiting time between the first and the second waiting attempt.
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