org.apache.flink.runtime.executiongraph.failover.flip1.partitionrelease.PartitionReleaseStrategy Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.flink.runtime.executiongraph.failover.flip1.partitionrelease;
import org.apache.flink.runtime.executiongraph.IntermediateResultPartition;
import org.apache.flink.runtime.jobgraph.IntermediateResultPartitionID;
import org.apache.flink.runtime.scheduler.strategy.ExecutionVertexID;
import org.apache.flink.runtime.scheduler.strategy.SchedulingTopology;
import java.util.List;
/**
* Interface for strategies that decide when to release
* {@link IntermediateResultPartition IntermediateResultPartitions}.
*/
public interface PartitionReleaseStrategy {
/**
* Calling this method informs the strategy that a vertex finished.
*
* @param finishedVertex Id of the vertex that finished the execution
* @return A list of result partitions that can be released
*/
List vertexFinished(ExecutionVertexID finishedVertex);
/**
* Calling this method informs the strategy that a vertex is no longer in finished state, e.g.,
* when a vertex is re-executed.
*
* @param executionVertexID Id of the vertex that is no longer in finished state.
*/
void vertexUnfinished(ExecutionVertexID executionVertexID);
/**
* Factory for {@link PartitionReleaseStrategy}.
*/
interface Factory {
PartitionReleaseStrategy createInstance(SchedulingTopology schedulingStrategy);
}
}