org.apache.flink.streaming.api.operators.sorted.state.BatchExecutionInternalTimeServiceManager 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.streaming.api.operators.sorted.state;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.runtime.state.CheckpointableKeyedStateBackend;
import org.apache.flink.runtime.state.KeyGroupStatePartitionStreamProvider;
import org.apache.flink.runtime.state.KeyedStateBackend;
import org.apache.flink.runtime.state.KeyedStateCheckpointOutputStream;
import org.apache.flink.streaming.api.operators.InternalTimeServiceManager;
import org.apache.flink.streaming.api.operators.InternalTimerService;
import org.apache.flink.streaming.api.operators.KeyContext;
import org.apache.flink.streaming.api.operators.Triggerable;
import org.apache.flink.streaming.api.watermark.Watermark;
import org.apache.flink.streaming.runtime.tasks.ProcessingTimeService;
import org.apache.flink.util.WrappingRuntimeException;
import java.util.HashMap;
import java.util.Map;
import static org.apache.flink.util.Preconditions.checkNotNull;
import static org.apache.flink.util.Preconditions.checkState;
/**
* An implementation of a {@link InternalTimeServiceManager} that manages timers with a single
* active key at a time. Can be used in a BATCH execution mode.
*/
public class BatchExecutionInternalTimeServiceManager
implements InternalTimeServiceManager, KeyedStateBackend.KeySelectionListener {
private final ProcessingTimeService processingTimeService;
private final Map> timerServices =
new HashMap<>();
public BatchExecutionInternalTimeServiceManager(ProcessingTimeService processingTimeService) {
this.processingTimeService = checkNotNull(processingTimeService);
}
@Override
@SuppressWarnings("unchecked")
public InternalTimerService getInternalTimerService(
String name,
TypeSerializer keySerializer,
TypeSerializer namespaceSerializer,
Triggerable triggerable) {
BatchExecutionInternalTimeService timerService =
(BatchExecutionInternalTimeService) timerServices.get(name);
if (timerService == null) {
timerService =
new BatchExecutionInternalTimeService<>(processingTimeService, triggerable);
timerServices.put(name, timerService);
}
return timerService;
}
@Override
public void advanceWatermark(Watermark watermark) {
if (watermark.getTimestamp() == Long.MAX_VALUE) {
keySelected(null);
}
}
@Override
public void snapshotToRawKeyedState(
KeyedStateCheckpointOutputStream context, String operatorName) throws Exception {
throw new UnsupportedOperationException("Checkpoints are not supported in BATCH execution");
}
public static InternalTimeServiceManager create(
CheckpointableKeyedStateBackend keyedStatedBackend,
ClassLoader userClassloader,
KeyContext keyContext, // the operator
ProcessingTimeService processingTimeService,
Iterable rawKeyedStates) {
checkState(
keyedStatedBackend instanceof BatchExecutionKeyedStateBackend,
"Batch execution specific time service can work only with BatchExecutionKeyedStateBackend");
BatchExecutionInternalTimeServiceManager timeServiceManager =
new BatchExecutionInternalTimeServiceManager<>(processingTimeService);
keyedStatedBackend.registerKeySelectionListener(timeServiceManager);
return timeServiceManager;
}
@Override
public void keySelected(K newKey) {
try {
for (BatchExecutionInternalTimeService value : timerServices.values()) {
value.setCurrentKey(newKey);
}
} catch (Exception e) {
throw new WrappingRuntimeException(e);
}
}
}