org.apache.flink.runtime.executiongraph.ExecutionGraphResultPartitionAvailabilityChecker Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.runtime.executiongraph;
import org.apache.flink.runtime.executiongraph.failover.flip1.ResultPartitionAvailabilityChecker;
import org.apache.flink.runtime.io.network.partition.JobMasterPartitionTracker;
import org.apache.flink.runtime.io.network.partition.ResultPartitionID;
import org.apache.flink.runtime.jobgraph.IntermediateResultPartitionID;
import java.util.function.Function;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* A {@link ResultPartitionAvailabilityChecker} which decides the intermediate result partition availability
* based on whether the corresponding result partition in the execution graph is tracked.
*/
public class ExecutionGraphResultPartitionAvailabilityChecker implements ResultPartitionAvailabilityChecker {
/** The function maps an IntermediateResultPartitionID to a ResultPartitionID. */
private final Function partitionIDMapper;
/** The tracker that tracks all available result partitions. */
private final JobMasterPartitionTracker partitionTracker;
ExecutionGraphResultPartitionAvailabilityChecker(
final Function partitionIDMapper,
final JobMasterPartitionTracker partitionTracker) {
this.partitionIDMapper = checkNotNull(partitionIDMapper);
this.partitionTracker = checkNotNull(partitionTracker);
}
@Override
public boolean isAvailable(final IntermediateResultPartitionID resultPartitionID) {
return partitionTracker.isPartitionTracked(partitionIDMapper.apply(resultPartitionID));
}
}