9aman commented on code in PR #14920: URL: https://github.com/apache/pinot/pull/14920#discussion_r1942248666
########## pinot-server/src/main/java/org/apache/pinot/server/api/resources/reingestion/utils/StatelessRealtimeSegmentDataManager.java: ########## @@ -0,0 +1,575 @@ +/** + * 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.server.api.resources.reingestion.utils; + +import com.google.common.annotations.VisibleForTesting; +import java.io.File; +import java.io.IOException; +import java.nio.file.Path; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.concurrent.atomic.AtomicReference; +import javax.annotation.Nullable; +import org.apache.commons.io.FileUtils; +import org.apache.pinot.common.metadata.segment.SegmentZKMetadata; +import org.apache.pinot.common.metrics.ServerMetrics; +import org.apache.pinot.common.utils.FileUploadDownloadClient; +import org.apache.pinot.common.utils.TarCompressionUtils; +import org.apache.pinot.segment.local.data.manager.SegmentDataManager; +import org.apache.pinot.segment.local.indexsegment.mutable.MutableSegmentImpl; +import org.apache.pinot.segment.local.io.writer.impl.MmapMemoryManager; +import org.apache.pinot.segment.local.realtime.converter.RealtimeSegmentConverter; +import org.apache.pinot.segment.local.realtime.impl.RealtimeSegmentConfig; +import org.apache.pinot.segment.local.realtime.impl.RealtimeSegmentStatsHistory; +import org.apache.pinot.segment.local.segment.creator.TransformPipeline; +import org.apache.pinot.segment.local.segment.index.loader.IndexLoadingConfig; +import org.apache.pinot.segment.local.utils.IngestionUtils; +import org.apache.pinot.segment.spi.MutableSegment; +import org.apache.pinot.segment.spi.V1Constants; +import org.apache.pinot.segment.spi.index.metadata.SegmentMetadataImpl; +import org.apache.pinot.segment.spi.partition.PartitionFunctionFactory; +import org.apache.pinot.segment.spi.store.SegmentDirectoryPaths; +import org.apache.pinot.spi.config.table.ColumnPartitionConfig; +import org.apache.pinot.spi.config.table.SegmentPartitionConfig; +import org.apache.pinot.spi.config.table.SegmentZKPropsConfig; +import org.apache.pinot.spi.config.table.TableConfig; +import org.apache.pinot.spi.data.Schema; +import org.apache.pinot.spi.data.readers.GenericRow; +import org.apache.pinot.spi.plugin.PluginManager; +import org.apache.pinot.spi.stream.MessageBatch; +import org.apache.pinot.spi.stream.PartitionGroupConsumer; +import org.apache.pinot.spi.stream.PartitionGroupConsumptionStatus; +import org.apache.pinot.spi.stream.StreamConfig; +import org.apache.pinot.spi.stream.StreamConsumerFactory; +import org.apache.pinot.spi.stream.StreamConsumerFactoryProvider; +import org.apache.pinot.spi.stream.StreamDataDecoder; +import org.apache.pinot.spi.stream.StreamDataDecoderImpl; +import org.apache.pinot.spi.stream.StreamDataDecoderResult; +import org.apache.pinot.spi.stream.StreamMessage; +import org.apache.pinot.spi.stream.StreamMessageDecoder; +import org.apache.pinot.spi.stream.StreamMetadataProvider; +import org.apache.pinot.spi.stream.StreamPartitionMsgOffset; +import org.apache.pinot.spi.stream.StreamPartitionMsgOffsetFactory; +import org.apache.pinot.spi.utils.retry.RetryPolicies; +import org.apache.pinot.spi.utils.retry.RetryPolicy; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +/** + * Simplified Segment Data Manager for ingesting data from a start offset to an end offset. + */ +public class StatelessRealtimeSegmentDataManager extends SegmentDataManager { + + private static final int DEFAULT_CAPACITY = 100_000; + private static final int DEFAULT_FETCH_TIMEOUT_MS = 5000; + public static final FileUploadDownloadClient FILE_UPLOAD_DOWNLOAD_CLIENT = new FileUploadDownloadClient(); + + private final String _segmentName; + private final String _tableNameWithType; + private final int _partitionGroupId; + private final String _segmentNameStr; + private final SegmentZKMetadata _segmentZKMetadata; + private final TableConfig _tableConfig; + private final Schema _schema; + private final StreamConfig _streamConfig; + private final StreamPartitionMsgOffsetFactory _offsetFactory; + private final StreamConsumerFactory _consumerFactory; + private StreamMetadataProvider _partitionMetadataProvider; + private final PartitionGroupConsumer _consumer; + private final StreamDataDecoder _decoder; + private final MutableSegmentImpl _realtimeSegment; + private final File _resourceTmpDir; + private final File _resourceDataDir; + private final Logger _logger; + private Thread _consumerThread; + private final AtomicBoolean _shouldStop = new AtomicBoolean(false); + private final AtomicBoolean _isDoneConsuming = new AtomicBoolean(false); + private final StreamPartitionMsgOffset _startOffset; + private final StreamPartitionMsgOffset _endOffset; + private volatile StreamPartitionMsgOffset _currentOffset; + private volatile int _numRowsIndexed = 0; + private final String _segmentStoreUriStr; + private final int _fetchTimeoutMs; + private final TransformPipeline _transformPipeline; + private volatile boolean _isSuccess = false; + private volatile Throwable _consumptionException; + private final ServerMetrics _serverMetrics; + + public StatelessRealtimeSegmentDataManager(String segmentName, String tableNameWithType, int partitionGroupId, + SegmentZKMetadata segmentZKMetadata, TableConfig tableConfig, Schema schema, + IndexLoadingConfig indexLoadingConfig, StreamConfig streamConfig, String startOffsetStr, String endOffsetStr, + ServerMetrics serverMetrics) + throws Exception { + + _segmentName = segmentName; + _tableNameWithType = tableNameWithType; + _partitionGroupId = partitionGroupId; + _segmentZKMetadata = segmentZKMetadata; + _tableConfig = tableConfig; + _schema = schema; + _segmentStoreUriStr = indexLoadingConfig.getSegmentStoreURI(); + _streamConfig = streamConfig; + _resourceTmpDir = new File(FileUtils.getTempDirectory(), "resourceTmpDir_" + System.currentTimeMillis()); + _resourceDataDir = new File(FileUtils.getTempDirectory(), "resourceDataDir_" + System.currentTimeMillis());; + _serverMetrics = serverMetrics; + _logger = LoggerFactory.getLogger(StatelessRealtimeSegmentDataManager.class.getName() + "_" + _segmentName); + + _offsetFactory = StreamConsumerFactoryProvider.create(_streamConfig).createStreamMsgOffsetFactory(); + _startOffset = _offsetFactory.create(startOffsetStr); + _endOffset = _offsetFactory.create(endOffsetStr); + + String clientId = getClientId(); + + // Temp dirs + _resourceTmpDir.mkdirs(); + _resourceDataDir.mkdirs(); + + _consumerFactory = StreamConsumerFactoryProvider.create(_streamConfig); + _partitionMetadataProvider = _consumerFactory.createPartitionMetadataProvider(clientId, _partitionGroupId); + _segmentNameStr = _segmentZKMetadata.getSegmentName(); + + // Create a simple PartitionGroupConsumptionStatus + PartitionGroupConsumptionStatus partitionGroupConsumptionStatus = + new PartitionGroupConsumptionStatus(_partitionGroupId, 0, _startOffset, null, null); + + _consumer = _consumerFactory.createPartitionGroupConsumer(clientId, partitionGroupConsumptionStatus); + + // Initialize decoder + Set<String> fieldsToRead = IngestionUtils.getFieldsForRecordExtractor(_tableConfig, _schema); + _decoder = createDecoder(fieldsToRead); + + // Fetch capacity from indexLoadingConfig or use default + int capacity = streamConfig.getFlushThresholdRows(); + if (capacity <= 0) { + capacity = DEFAULT_CAPACITY; + } + + // Fetch average number of multi-values from indexLoadingConfig + int avgNumMultiValues = indexLoadingConfig.getRealtimeAvgMultiValueCount(); + + // Load stats history, here we are using the same stats while as the RealtimeSegmentDataManager so that we are + // much more efficient in allocating buffers. It also works with empty file + String tableDataDir = indexLoadingConfig.getInstanceDataManagerConfig() != null + ? indexLoadingConfig.getInstanceDataManagerConfig().getInstanceDataDir() + File.separator + _tableNameWithType + : _resourceTmpDir.getAbsolutePath(); + File statsHistoryFile = new File(tableDataDir, "segment-stats.ser"); + RealtimeSegmentStatsHistory statsHistory = RealtimeSegmentStatsHistory.deserialzeFrom(statsHistoryFile); + + // Initialize mutable segment with configurations + RealtimeSegmentConfig.Builder realtimeSegmentConfigBuilder = + new RealtimeSegmentConfig.Builder(indexLoadingConfig).setTableNameWithType(_tableNameWithType) + .setSegmentName(_segmentName).setStreamName(_streamConfig.getTopicName()) + .setSegmentZKMetadata(_segmentZKMetadata).setStatsHistory(statsHistory).setSchema(_schema) + .setCapacity(capacity).setAvgNumMultiValues(avgNumMultiValues) + .setOffHeap(indexLoadingConfig.isRealtimeOffHeapAllocation()) + .setFieldConfigList(tableConfig.getFieldConfigList()).setConsumerDir(_resourceDataDir.getAbsolutePath()) + .setMemoryManager( + new MmapMemoryManager(FileUtils.getTempDirectory().getAbsolutePath(), _segmentNameStr, _serverMetrics)); + + setPartitionParameters(realtimeSegmentConfigBuilder, _tableConfig.getIndexingConfig().getSegmentPartitionConfig()); + + _realtimeSegment = new MutableSegmentImpl(realtimeSegmentConfigBuilder.build(), _serverMetrics); + + _transformPipeline = new TransformPipeline(tableConfig, schema); + + // Initialize fetch timeout + _fetchTimeoutMs = + _streamConfig.getFetchTimeoutMillis() > 0 ? _streamConfig.getFetchTimeoutMillis() : DEFAULT_FETCH_TIMEOUT_MS; + } + + private String getClientId() { + return _tableNameWithType + "-" + _partitionGroupId; + } + + public void startConsumption() { + // Start the consumer thread + _consumerThread = new Thread(new PartitionConsumer(), _segmentName); Review Comment: Are we not logging this ? -- This is an automated message from the Apache Git Service. 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