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[FLINK-36926][table] Introduce window join operator with async state api
This closes #25815
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122 changes: 122 additions & 0 deletions
122
...src/main/java/org/apache/flink/table/runtime/operators/AsyncStateTableStreamOperator.java
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| Original file line number | Diff line number | Diff line change |
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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, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package org.apache.flink.table.runtime.operators; | ||
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| import org.apache.flink.runtime.asyncprocessing.operators.AbstractAsyncStateStreamOperator; | ||
| import org.apache.flink.streaming.api.TimerService; | ||
| import org.apache.flink.streaming.api.operators.InternalTimerService; | ||
| import org.apache.flink.streaming.api.watermark.Watermark; | ||
| import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; | ||
| import org.apache.flink.streaming.runtime.tasks.ProcessingTimeService; | ||
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| import static org.apache.flink.util.Preconditions.checkNotNull; | ||
| import static org.apache.flink.util.Preconditions.checkState; | ||
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| /** | ||
| * Table operator to invoke close always. This is a base class for both batch and stream operators | ||
| * without key. | ||
| * | ||
| * <p>This class is nearly identical with {@link TableStreamOperator}, but extending from {@link | ||
| * AbstractAsyncStateStreamOperator} to integrate with asynchronous state access. | ||
| */ | ||
| public abstract class AsyncStateTableStreamOperator<OUT> | ||
| extends AbstractAsyncStateStreamOperator<OUT> { | ||
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| /** We listen to this ourselves because we don't have an {@link InternalTimerService}. */ | ||
| protected long currentWatermark = Long.MIN_VALUE; | ||
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| protected transient ContextImpl ctx; | ||
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| @Override | ||
| public void open() throws Exception { | ||
| super.open(); | ||
| this.ctx = new ContextImpl(getProcessingTimeService()); | ||
| } | ||
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| @Override | ||
| public boolean useSplittableTimers() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public Watermark preProcessWatermark(Watermark mark) throws Exception { | ||
| currentWatermark = mark.getTimestamp(); | ||
| return super.preProcessWatermark(mark); | ||
| } | ||
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| /** Information available in an invocation of processElement. */ | ||
| protected class ContextImpl implements TimerService { | ||
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| protected final ProcessingTimeService timerService; | ||
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| public StreamRecord<?> element; | ||
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| ContextImpl(ProcessingTimeService timerService) { | ||
| this.timerService = checkNotNull(timerService); | ||
| } | ||
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| public Long timestamp() { | ||
| checkState(element != null); | ||
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| if (element.hasTimestamp()) { | ||
| return element.getTimestamp(); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
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| @Override | ||
| public long currentProcessingTime() { | ||
| return timerService.getCurrentProcessingTime(); | ||
| } | ||
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| @Override | ||
| public long currentWatermark() { | ||
| return currentWatermark; | ||
| } | ||
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| @Override | ||
| public void registerProcessingTimeTimer(long time) { | ||
| throw new UnsupportedOperationException( | ||
| "Setting timers is only supported on a keyed streams."); | ||
| } | ||
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| @Override | ||
| public void registerEventTimeTimer(long time) { | ||
| throw new UnsupportedOperationException( | ||
| "Setting timers is only supported on a keyed streams."); | ||
| } | ||
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| @Override | ||
| public void deleteProcessingTimeTimer(long time) { | ||
| throw new UnsupportedOperationException( | ||
| "Delete timers is only supported on a keyed streams."); | ||
| } | ||
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| @Override | ||
| public void deleteEventTimeTimer(long time) { | ||
| throw new UnsupportedOperationException( | ||
| "Delete timers is only supported on a keyed streams."); | ||
| } | ||
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| public TimerService timerService() { | ||
| return this; | ||
| } | ||
| } | ||
| } |
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