org.apache.flink.runtime.io.network.partition.ResultPartitionID Maven / Gradle / Ivy
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* 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.annotation.VisibleForTesting;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.executiongraph.IntermediateResultPartition;
import org.apache.flink.runtime.jobgraph.IntermediateResultPartitionID;
import java.io.Serializable;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Runtime identifier of a produced {@link IntermediateResultPartition}.
*
* In failure cases the {@link IntermediateResultPartitionID} is not enough to uniquely
* identify a result partition. It needs to be associated with the producing task as well to ensure
* correct tracking of failed/restarted tasks.
*/
public final class ResultPartitionID implements Serializable {
private static final long serialVersionUID = -902516386203787826L;
private final IntermediateResultPartitionID partitionId;
private final ExecutionAttemptID producerId;
@VisibleForTesting
public ResultPartitionID() {
this(new IntermediateResultPartitionID(), new ExecutionAttemptID());
}
public ResultPartitionID(IntermediateResultPartitionID partitionId, ExecutionAttemptID producerId) {
this.partitionId = checkNotNull(partitionId);
this.producerId = checkNotNull(producerId);
}
public IntermediateResultPartitionID getPartitionId() {
return partitionId;
}
public ExecutionAttemptID getProducerId() {
return producerId;
}
@Override
public boolean equals(Object obj) {
if (obj != null && obj.getClass() == ResultPartitionID.class) {
ResultPartitionID o = (ResultPartitionID) obj;
return o.getPartitionId().equals(partitionId) && o.getProducerId().equals(producerId);
}
return false;
}
@Override
public int hashCode() {
return partitionId.hashCode() ^ producerId.hashCode();
}
@Override
public String toString() {
return partitionId.toString() + "@" + producerId.toString();
}
}