robertzych commented on code in PR #10463: URL: https://github.com/apache/pinot/pull/10463#discussion_r1234298355
########## pinot-plugins/pinot-minion-tasks/pinot-minion-builtin-tasks/src/main/java/org/apache/pinot/plugin/minion/tasks/upsertcompaction/UpsertCompactionTaskExecutor.java: ########## @@ -0,0 +1,240 @@ +/** + * 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.pinot.plugin.minion.tasks.upsertcompaction; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Preconditions; +import java.io.File; +import java.io.IOException; +import java.net.URISyntaxException; +import java.nio.ByteBuffer; +import java.util.Collections; +import java.util.Map; +import java.util.Objects; +import java.util.Set; +import javax.annotation.Nullable; +import javax.ws.rs.client.ClientBuilder; +import javax.ws.rs.core.Response; +import org.apache.helix.HelixAdmin; +import org.apache.helix.HelixManager; +import org.apache.helix.model.ExternalView; +import org.apache.helix.model.InstanceConfig; +import org.apache.http.client.utils.URIBuilder; +import org.apache.pinot.common.metadata.segment.SegmentZKMetadataCustomMapModifier; +import org.apache.pinot.common.utils.config.InstanceUtils; +import org.apache.pinot.core.common.MinionConstants; +import org.apache.pinot.core.minion.PinotTaskConfig; +import org.apache.pinot.plugin.minion.tasks.BaseSingleSegmentConversionExecutor; +import org.apache.pinot.plugin.minion.tasks.SegmentConversionResult; +import org.apache.pinot.segment.local.segment.creator.impl.SegmentIndexCreationDriverImpl; +import org.apache.pinot.segment.local.segment.readers.PinotSegmentRecordReader; +import org.apache.pinot.segment.spi.creator.SegmentGeneratorConfig; +import org.apache.pinot.segment.spi.index.metadata.SegmentMetadataImpl; +import org.apache.pinot.spi.config.table.TableConfig; +import org.apache.pinot.spi.data.readers.GenericRow; +import org.apache.pinot.spi.data.readers.RecordReader; +import org.apache.pinot.spi.data.readers.RecordReaderConfig; +import org.roaringbitmap.PeekableIntIterator; +import org.roaringbitmap.buffer.ImmutableRoaringBitmap; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +public class UpsertCompactionTaskExecutor extends BaseSingleSegmentConversionExecutor { + private static final Logger LOGGER = LoggerFactory.getLogger(UpsertCompactionTaskExecutor.class); + private static HelixManager _helixManager = MINION_CONTEXT.getHelixManager(); + private static HelixAdmin _clusterManagementTool = _helixManager.getClusterManagmentTool(); + private static String _clusterName = _helixManager.getClusterName(); + + private class CompactedRecordReader implements RecordReader { + private final PinotSegmentRecordReader _pinotSegmentRecordReader; + private final PeekableIntIterator _validDocIdsIterator; + // Reusable generic row to store the next row to return + GenericRow _nextRow = new GenericRow(); + // Flag to mark whether we need to fetch another row + boolean _nextRowReturned = true; + // Flag to mark whether all records have been iterated + boolean _finished = false; + + CompactedRecordReader(File indexDir, ImmutableRoaringBitmap validDocIds) { + _pinotSegmentRecordReader = new PinotSegmentRecordReader(); + _pinotSegmentRecordReader.init(indexDir, null, null); + _validDocIdsIterator = validDocIds.getIntIterator(); + } + + @Override + public void init(File dataFile, Set<String> fieldsToRead, @Nullable RecordReaderConfig recordReaderConfig) { + } + + @Override + public boolean hasNext() { + if (_finished) { + return false; + } + + // If next row has not been returned, return true + if (!_nextRowReturned) { + return true; + } + + // Try to get the next row to return + if (_validDocIdsIterator.hasNext()) { + int docId = _validDocIdsIterator.next(); + _nextRow.clear(); + _pinotSegmentRecordReader.getRecord(docId, _nextRow); + _nextRowReturned = false; + return true; + } + + // Cannot find next row to return, return false + _finished = true; + return false; + } + + @Override + public GenericRow next() { + return next(new GenericRow()); + } + + @Override + public GenericRow next(GenericRow reuse) { + Preconditions.checkState(!_nextRowReturned); + reuse.init(_nextRow); + _nextRowReturned = true; + return reuse; + } + + @Override + public void rewind() { + _pinotSegmentRecordReader.rewind(); + _nextRowReturned = true; + _finished = false; + } + + @Override + public void close() + throws IOException { + _pinotSegmentRecordReader.close(); + } + } + + @Override + protected SegmentConversionResult convert(PinotTaskConfig pinotTaskConfig, File indexDir, File workingDir) + throws Exception { + _eventObserver.notifyProgress(pinotTaskConfig, "Compacting segment: " + indexDir); + Map<String, String> configs = pinotTaskConfig.getConfigs(); + String taskType = pinotTaskConfig.getTaskType(); + LOGGER.info("Starting task: {} with configs: {}", taskType, configs); + long startMillis = System.currentTimeMillis(); + + String tableNameWithType = configs.get(MinionConstants.TABLE_NAME_KEY); + TableConfig tableConfig = getTableConfig(tableNameWithType); + ImmutableRoaringBitmap validDocIds = getValidDocIds(tableNameWithType, configs); + + SegmentMetadataImpl segmentMetadata = new SegmentMetadataImpl(indexDir); + String segmentName = segmentMetadata.getName(); + try (CompactedRecordReader compactedRecordReader = new CompactedRecordReader(indexDir, validDocIds)) { + SegmentGeneratorConfig config = getSegmentGeneratorConfig(workingDir, tableConfig, segmentMetadata, segmentName); + SegmentIndexCreationDriverImpl driver = new SegmentIndexCreationDriverImpl(); + driver.init(config, compactedRecordReader); + driver.build(); + } + + File compactedSegmentFile = new File(workingDir, segmentName); + + SegmentConversionResult result = new SegmentConversionResult.Builder() + .setFile(compactedSegmentFile) + .setTableNameWithType(tableNameWithType) + .setSegmentName(configs.get(MinionConstants.SEGMENT_NAME_KEY)) + .build(); + + long endMillis = System.currentTimeMillis(); + LOGGER.info("Finished task: {} with configs: {}. Total time: {}ms", taskType, configs, (endMillis - startMillis)); + + return result; + } + + private static SegmentGeneratorConfig getSegmentGeneratorConfig(File workingDir, TableConfig tableConfig, + SegmentMetadataImpl segmentMetadata, String segmentName) { + SegmentGeneratorConfig config = new SegmentGeneratorConfig(tableConfig, segmentMetadata.getSchema()); + config.setOutDir(workingDir.getPath()); + config.setSegmentName(segmentName); + // Keep index creation time the same as original segment because both segments use the same raw data. + // This way, for REFRESH case, when new segment gets pushed to controller, we can use index creation time to + // identify if the new pushed segment has newer data than the existing one. + config.setCreationTime(String.valueOf(segmentMetadata.getIndexCreationTime())); + + // The time column type info is not stored in the segment metadata. + // Keep segment start/end time to properly handle time column type other than EPOCH (e.g.SIMPLE_FORMAT). + if (segmentMetadata.getTimeInterval() != null) { + config.setTimeColumnName(tableConfig.getValidationConfig().getTimeColumnName()); + config.setStartTime(Long.toString(segmentMetadata.getStartTime())); + config.setEndTime(Long.toString(segmentMetadata.getEndTime())); + config.setSegmentTimeUnit(segmentMetadata.getTimeUnit()); + } + return config; + } + + private static ImmutableRoaringBitmap getValidDocIds(String tableNameWithType, Map<String, String> configs) Review Comment: @snleee Since I don't see a clean way to move this method to `ServerSegmentMetadataReader` I've added the `TODO`. -- This is an automated message from the Apache Git Service. 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