org.apache.flink.runtime.taskexecutor.rpc.RpcInputSplitProvider 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
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package org.apache.flink.runtime.taskexecutor.rpc;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.core.io.InputSplit;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.runtime.jobgraph.tasks.InputSplitProvider;
import org.apache.flink.runtime.jobgraph.tasks.InputSplitProviderException;
import org.apache.flink.runtime.jobmaster.JobMasterGateway;
import org.apache.flink.runtime.jobmaster.SerializedInputSplit;
import org.apache.flink.util.InstantiationUtil;
import org.apache.flink.util.Preconditions;
import java.util.concurrent.CompletableFuture;
public class RpcInputSplitProvider implements InputSplitProvider {
private final JobMasterGateway jobMasterGateway;
private final JobVertexID jobVertexID;
private final ExecutionAttemptID executionAttemptID;
private final Time timeout;
public RpcInputSplitProvider(
JobMasterGateway jobMasterGateway,
JobVertexID jobVertexID,
ExecutionAttemptID executionAttemptID,
Time timeout) {
this.jobMasterGateway = Preconditions.checkNotNull(jobMasterGateway);
this.jobVertexID = Preconditions.checkNotNull(jobVertexID);
this.executionAttemptID = Preconditions.checkNotNull(executionAttemptID);
this.timeout = Preconditions.checkNotNull(timeout);
}
@Override
public InputSplit getNextInputSplit(ClassLoader userCodeClassLoader) throws InputSplitProviderException {
Preconditions.checkNotNull(userCodeClassLoader);
CompletableFuture futureInputSplit = jobMasterGateway.requestNextInputSplit(
jobVertexID,
executionAttemptID);
try {
SerializedInputSplit serializedInputSplit = futureInputSplit.get(timeout.getSize(), timeout.getUnit());
if (serializedInputSplit.isEmpty()) {
return null;
} else {
return InstantiationUtil.deserializeObject(serializedInputSplit.getInputSplitData(), userCodeClassLoader);
}
} catch (Exception e) {
throw new InputSplitProviderException("Requesting the next input split failed.", e);
}
}
}