cryptoe commented on code in PR #15470: URL: https://github.com/apache/druid/pull/15470#discussion_r1542243069
########## extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/querykit/WindowOperatorQueryFrameProcessorFactory.java: ########## @@ -0,0 +1,193 @@ +/* + * 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. + */ + +package org.apache.druid.msq.querykit; + +import com.fasterxml.jackson.annotation.JsonCreator; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.annotation.JsonTypeName; +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableList; +import com.google.common.collect.Iterables; +import it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap; +import it.unimi.dsi.fastutil.ints.Int2ObjectSortedMap; +import org.apache.druid.frame.processor.FrameProcessor; +import org.apache.druid.frame.processor.OutputChannel; +import org.apache.druid.frame.processor.OutputChannelFactory; +import org.apache.druid.frame.processor.OutputChannels; +import org.apache.druid.frame.processor.manager.ProcessorManagers; +import org.apache.druid.java.util.common.guava.Sequence; +import org.apache.druid.java.util.common.guava.Sequences; +import org.apache.druid.msq.counters.CounterTracker; +import org.apache.druid.msq.input.InputSlice; +import org.apache.druid.msq.input.InputSliceReader; +import org.apache.druid.msq.input.ReadableInput; +import org.apache.druid.msq.input.stage.ReadablePartition; +import org.apache.druid.msq.input.stage.StageInputSlice; +import org.apache.druid.msq.kernel.FrameContext; +import org.apache.druid.msq.kernel.ProcessorsAndChannels; +import org.apache.druid.msq.kernel.StageDefinition; +import org.apache.druid.query.operator.OperatorFactory; +import org.apache.druid.query.operator.WindowOperatorQuery; +import org.apache.druid.segment.column.RowSignature; + +import javax.annotation.Nullable; +import java.io.IOException; +import java.util.List; +import java.util.Objects; +import java.util.function.Consumer; + +@JsonTypeName("window") +public class WindowOperatorQueryFrameProcessorFactory extends BaseFrameProcessorFactory +{ + private final WindowOperatorQuery query; + private final List<OperatorFactory> operatorList; + private final RowSignature stageRowSignature; + private final boolean isEmptyOver; + private final int maxRowsMaterializedInWindow; + + @JsonCreator + public WindowOperatorQueryFrameProcessorFactory( + @JsonProperty("query") WindowOperatorQuery query, + @JsonProperty("operatorList") List<OperatorFactory> operatorFactoryList, + @JsonProperty("stageRowSignature") RowSignature stageRowSignature, + @JsonProperty("emptyOver") boolean emptyOver, + @JsonProperty("maxRowsMaterializedInWindow") int maxRowsMaterializedInWindow + ) + { + this.query = Preconditions.checkNotNull(query, "query"); + this.operatorList = Preconditions.checkNotNull(operatorFactoryList, "bad operator"); + this.stageRowSignature = Preconditions.checkNotNull(stageRowSignature, "stageSignature"); + this.isEmptyOver = emptyOver; + this.maxRowsMaterializedInWindow = maxRowsMaterializedInWindow; + } + + @JsonProperty("query") + public WindowOperatorQuery getQuery() + { + return query; + } + + @JsonProperty("operatorList") + public List<OperatorFactory> getOperators() + { + return operatorList; + } + + @JsonProperty("stageRowSignature") + public RowSignature getSignature() + { + return stageRowSignature; + } + + @JsonProperty("emptyOver") + public boolean isEmptyOverFound() + { + return isEmptyOver; + } + + @JsonProperty("maxRowsMaterializedInWindow") + public int getMaxRowsMaterializedInWindow() + { + return maxRowsMaterializedInWindow; + } + + @Override + public ProcessorsAndChannels<Object, Long> makeProcessors( + StageDefinition stageDefinition, + int workerNumber, + List<InputSlice> inputSlices, + InputSliceReader inputSliceReader, + @Nullable Object extra, + OutputChannelFactory outputChannelFactory, + FrameContext frameContext, + int maxOutstandingProcessors, + CounterTracker counters, + Consumer<Throwable> warningPublisher + ) + { + // Expecting a single input slice from some prior stage. + final StageInputSlice slice = (StageInputSlice) Iterables.getOnlyElement(inputSlices); + final Int2ObjectSortedMap<OutputChannel> outputChannels = new Int2ObjectAVLTreeMap<>(); + + for (final ReadablePartition partition : slice.getPartitions()) { + outputChannels.computeIfAbsent( + partition.getPartitionNumber(), + i -> { + try { + return outputChannelFactory.openChannel(i); + } + catch (IOException e) { + throw new RuntimeException(e); + } + } + ); + } + + final Sequence<ReadableInput> readableInputs = + Sequences.simple(inputSliceReader.attach(0, slice, counters, warningPublisher)); + + final Sequence<FrameProcessor<Object>> processors = readableInputs.map( + readableInput -> { + final OutputChannel outputChannel = + outputChannels.get(readableInput.getStagePartition().getPartitionNumber()); + + return new WindowOperatorQueryFrameProcessor( + query, + readableInput.getChannel(), + outputChannel.getWritableChannel(), + stageDefinition.createFrameWriterFactory(outputChannel.getFrameMemoryAllocator()), + readableInput.getChannelFrameReader(), + frameContext.jsonMapper(), + operatorList, + stageRowSignature, + isEmptyOver, + maxRowsMaterializedInWindow + ); + } + ); + + return new ProcessorsAndChannels<>( + ProcessorManagers.of(processors), + OutputChannels.wrapReadOnly(ImmutableList.copyOf(outputChannels.values())) + ); + } + + @Override + public boolean equals(Object o) + { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + WindowOperatorQueryFrameProcessorFactory that = (WindowOperatorQueryFrameProcessorFactory) o; Review Comment: The equals and hashcode have to be regenerated :) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org
