deniskuzZ commented on code in PR #6793: URL: https://github.com/apache/hive/pull/6793#discussion_r4155244490
########## llap-server/src/java/org/apache/hadoop/hive/llap/io/decode/ParquetColumnVectorProducer.java: ########## @@ -0,0 +1,103 @@ +/* + * 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.hadoop.hive.llap.io.decode; + +import java.io.IOException; +import java.util.Map; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.hive.llap.cache.BufferUsageManager; +import org.apache.hadoop.hive.llap.cache.LowLevelCache; +import org.apache.hadoop.hive.llap.counters.QueryFragmentCounters; +import org.apache.hadoop.hive.llap.io.api.impl.ColumnVectorBatch; +import org.apache.hadoop.hive.llap.io.api.impl.LlapIoImpl; +import org.apache.hadoop.hive.llap.io.encoded.ParquetEncodedDataReader; +import org.apache.hadoop.hive.llap.metrics.LlapDaemonCacheMetrics; +import org.apache.hadoop.hive.llap.metrics.LlapDaemonIOMetrics; +import org.apache.hadoop.hive.ql.io.orc.encoded.Consumer; +import org.apache.hadoop.hive.ql.io.sarg.SearchArgument; +import org.apache.hadoop.hive.ql.plan.PartitionDesc; +import org.apache.hadoop.hive.serde2.Deserializer; +import org.apache.hadoop.mapred.FileSplit; +import org.apache.hadoop.mapred.InputFormat; +import org.apache.hadoop.mapred.JobConf; +import org.apache.hadoop.mapred.Reporter; + +public class ParquetColumnVectorProducer implements ColumnVectorProducer { + private final LowLevelCache lowLevelCache; + private final BufferUsageManager bufferManager; + private final Configuration conf; + private final LlapDaemonCacheMetrics cacheMetrics; + private final LlapDaemonIOMetrics ioMetrics; + + public ParquetColumnVectorProducer(LowLevelCache lowLevelCache, BufferUsageManager bufferManager, + Configuration conf, LlapDaemonCacheMetrics cacheMetrics, LlapDaemonIOMetrics ioMetrics) { + this.lowLevelCache = lowLevelCache; + this.bufferManager = bufferManager; + this.conf = conf; + this.cacheMetrics = cacheMetrics; + this.ioMetrics = ioMetrics; + } + + @Override + public ReadPipeline createReadPipeline(Consumer<ColumnVectorBatch> consumer, FileSplit split, + Includes includes, SearchArgument sarg, QueryFragmentCounters counters, + SchemaEvolutionFactory sef, InputFormat<?, ?> sourceInputFormat, Deserializer sourceSerDe, + Reporter reporter, JobConf job, Map<Path, PartitionDesc> parts) { + try { + cacheMetrics.incrCacheReadRequests(); + ParquetEncodedDataConsumer edc = + new ParquetEncodedDataConsumer(consumer, includes, counters, ioMetrics, job); + ParquetEncodedDataReader reader = new ParquetEncodedDataReader( + lowLevelCache, bufferManager, conf, job, split, edc, counters); + reader.loadFooter(); + // Null makes LlapInputFormat fall back to the normal VectorizedParquetRecordReader. + if (reader.projectsNestedTypes()) { + LlapIoImpl.LOG.info("Parquet native cache: falling back to normal reader for {} due to " + + "nested types in the projection", split.getPath()); + return null; + } + /* + * Fallback path still caches (footer via LlapProxy, data via LlapCacheAwareFs); what's lost + * for this split is vectored reads, row-group lookahead, and its LLAP IO summary counters. + * Guard fires per split only for Iceberg-Parquet files that physically carry _row_id / + * _last_updated_sequence_number while the query projects those virtual columns. + * + * Table shape Fires? + * ------------------------------------------------------------ ------ + * Non-Iceberg Parquet never + * Iceberg-Parquet, row lineage disabled never Review Comment: do we need n`eedsRowLineage()` and the comment block in this PR? -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
