org.apache.flink.runtime.io.network.partition.TaskExecutorPartitionInfo 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.io.network.partition;
import org.apache.flink.runtime.deployment.ResultPartitionDeploymentDescriptor;
import org.apache.flink.runtime.jobgraph.IntermediateDataSetID;
import java.util.Objects;
import static org.apache.flink.util.Preconditions.checkArgument;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Encapsulates meta-information the TaskExecutor requires to be kept for each partition.
*/
public final class TaskExecutorPartitionInfo {
private final ResultPartitionID resultPartitionId;
private final IntermediateDataSetID intermediateDataSetId;
private final int numberOfPartitions;
public TaskExecutorPartitionInfo(ResultPartitionID resultPartitionId, IntermediateDataSetID intermediateDataSetId, int numberOfPartitions) {
this.resultPartitionId = checkNotNull(resultPartitionId);
this.intermediateDataSetId = checkNotNull(intermediateDataSetId);
checkArgument(numberOfPartitions > 0);
this.numberOfPartitions = numberOfPartitions;
}
public IntermediateDataSetID getIntermediateDataSetId() {
return intermediateDataSetId;
}
public ResultPartitionID getResultPartitionId() {
return resultPartitionId;
}
public int getNumberOfPartitions() {
return numberOfPartitions;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
TaskExecutorPartitionInfo that = (TaskExecutorPartitionInfo) o;
// only use the dataset ID here, so we can use this as an efficient place for meta data
return Objects.equals(intermediateDataSetId, that.intermediateDataSetId);
}
@Override
public int hashCode() {
// only use the dataset ID here, so we can use this as an efficient place for meta data
return Objects.hash(intermediateDataSetId);
}
public static TaskExecutorPartitionInfo from(ResultPartitionDeploymentDescriptor resultPartitionDeploymentDescriptor) {
return new TaskExecutorPartitionInfo(
resultPartitionDeploymentDescriptor.getShuffleDescriptor().getResultPartitionID(),
resultPartitionDeploymentDescriptor.getResultId(),
resultPartitionDeploymentDescriptor.getTotalNumberOfPartitions());
}
}