org.apache.flink.runtime.executiongraph.DefaultVertexAttemptNumberStore 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;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.util.Preconditions;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/** Maintains the attempt number per subtask. */
public class DefaultVertexAttemptNumberStore implements MutableVertexAttemptNumberStore {
private final Map> vertexSubtaskToAttemptCounts = new HashMap<>();
@Override
public SubtaskAttemptNumberStore getAttemptCounts(JobVertexID vertexId) {
return new DefaultSubtaskAttemptNumberStore(
Collections.unmodifiableList(
new ArrayList<>(
vertexSubtaskToAttemptCounts.getOrDefault(
vertexId, Collections.emptyList()))));
}
@Override
public void setAttemptCount(JobVertexID jobVertexId, int subtaskIndex, int attemptNumber) {
Preconditions.checkArgument(subtaskIndex >= 0);
Preconditions.checkArgument(attemptNumber >= 0);
final List attemptCounts =
vertexSubtaskToAttemptCounts.computeIfAbsent(
jobVertexId, ignored -> new ArrayList<>(32));
while (subtaskIndex >= attemptCounts.size()) {
attemptCounts.add(0);
}
attemptCounts.set(subtaskIndex, attemptNumber);
}
}