org.apache.flink.runtime.io.network.partition.consumer.InputGateID 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.consumer;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.jobgraph.IntermediateDataSetID;
import java.io.Serializable;
/**
* Runtime identifier of a consumed {@link org.apache.flink.runtime.executiongraph.IntermediateResult}.
*
* At runtime the {@link org.apache.flink.runtime.jobgraph.IntermediateDataSetID} is not enough to uniquely
* identify an input gate. It needs to be associated with the consuming task as well to ensure
* correct tracking of gates in shuffle implementation.
*/
public class InputGateID implements Serializable {
private static final long serialVersionUID = 4613970383536333315L;
/**
* The ID of the consumed intermediate result. Each input gate consumes partitions of the
* intermediate result specified by this ID. This ID also identifies the input gate at the
* consuming task.
*/
private final IntermediateDataSetID consumedResultID;
/**
* The ID of the consumer.
*
*
The ID of {@link org.apache.flink.runtime.executiongraph.Execution} and
* its local {@link org.apache.flink.runtime.taskmanager.Task}.
*/
private final ExecutionAttemptID consumerID;
public InputGateID(IntermediateDataSetID consumedResultID, ExecutionAttemptID consumerID) {
this.consumedResultID = consumedResultID;
this.consumerID = consumerID;
}
public IntermediateDataSetID getConsumedResultID() {
return consumedResultID;
}
public ExecutionAttemptID getConsumerID() {
return consumerID;
}
@Override
public boolean equals(Object obj) {
if (obj != null && obj.getClass() == InputGateID.class) {
InputGateID o = (InputGateID) obj;
return o.getConsumedResultID().equals(consumedResultID) && o.getConsumerID().equals(consumerID);
}
return false;
}
@Override
public int hashCode() {
return consumedResultID.hashCode() ^ consumerID.hashCode();
}
@Override
public String toString() {
return consumedResultID.toString() + "@" + consumerID.toString();
}
}