org.apache.flink.runtime.executiongraph.ExecutionAttemptID 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.executiongraph;
import org.apache.flink.util.AbstractID;
import org.apache.flink.shaded.netty4.io.netty.buffer.ByteBuf;
/**
* Unique identifier for the attempt to execute a tasks. Multiple attempts happen
* in cases of failures and recovery.
*/
public class ExecutionAttemptID extends AbstractID {
private static final long serialVersionUID = -1169683445778281344L;
public ExecutionAttemptID() {
}
public ExecutionAttemptID(long lowerPart, long upperPart) {
super(lowerPart, upperPart);
}
public void writeTo(ByteBuf buf) {
buf.writeLong(this.lowerPart);
buf.writeLong(this.upperPart);
}
public static ExecutionAttemptID fromByteBuf(ByteBuf buf) {
long lower = buf.readLong();
long upper = buf.readLong();
return new ExecutionAttemptID(lower, upper);
}
}