org.apache.flink.runtime.shuffle.ShuffleMaster Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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*/
package org.apache.flink.runtime.shuffle;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;
/**
* Intermediate result partition registry to use in {@link org.apache.flink.runtime.jobmaster.JobMaster}.
*
* @param partition shuffle descriptor used for producer/consumer deployment and their data exchange.
*/
public interface ShuffleMaster {
/**
* Asynchronously register a partition and its producer with the shuffle service.
*
* The returned shuffle descriptor is an internal handle
* which identifies the partition internally within the shuffle service.
* The descriptor should provide enough information to read from or write data to the partition.
*
* @param partitionDescriptor general job graph information about the partition
* @param producerDescriptor general producer information (location, execution id, connection info)
* @return future with the partition shuffle descriptor used for producer/consumer deployment and their data exchange.
*/
CompletableFuture registerPartitionWithProducer(
PartitionDescriptor partitionDescriptor,
ProducerDescriptor producerDescriptor);
/**
* Release any external resources occupied by the given partition.
*
* This call triggers release of any resources which are occupied by the given partition in the external systems
* outside of the producer executor. This is mostly relevant for the batch jobs and blocking result partitions.
* The producer local resources are managed by {@link ShuffleDescriptor#storesLocalResourcesOn()} and
* {@link ShuffleEnvironment#releasePartitionsLocally(Collection)}.
*
* @param shuffleDescriptor shuffle descriptor of the result partition to release externally.
*/
void releasePartitionExternally(ShuffleDescriptor shuffleDescriptor);
}