kowshik commented on a change in pull request #10478: URL: https://github.com/apache/kafka/pull/10478#discussion_r613799479
########## File path: core/src/main/scala/kafka/log/LogLoader.scala ########## @@ -0,0 +1,526 @@ +/** + * 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 kafka.log + +import java.io.{File, IOException} +import java.nio.file.{Files, NoSuchFileException} + +import kafka.common.LogSegmentOffsetOverflowException +import kafka.log.Log.{CleanedFileSuffix, DeletedFileSuffix, SwapFileSuffix, isIndexFile, isLogFile, offsetFromFile, offsetFromFileName} +import kafka.server.{LogDirFailureChannel, LogOffsetMetadata} +import kafka.server.epoch.LeaderEpochFileCache +import kafka.utils.{CoreUtils, Logging, Scheduler} +import org.apache.kafka.common.TopicPartition +import org.apache.kafka.common.errors.InvalidOffsetException +import org.apache.kafka.common.utils.Time + +import scala.collection.{Seq, Set, mutable} + +case class LoadedLogOffsets(logStartOffset: Long, + recoveryPoint: Long, + nextOffsetMetadata: LogOffsetMetadata) + +/** + * @param dir The directory from which log segments need to be loaded + * @param topicPartition The topic partition associated with the log being loaded + * @param config The configuration settings for the log being loaded + * @param scheduler The thread pool scheduler used for background actions + * @param time The time instance used for checking the clock + * @param logDirFailureChannel The LogDirFailureChannel instance to asynchronously handle log Review comment: In the recovery path, the `logDirFailureChannel` is used to asynchronously handle `IOException` within the `Log.deleteSegmentFiles()` calls. This was the existing behavior prior to this refactor as well. Should we change the existing behavior?https://github.com/apache/kafka/blob/193a9dfc44fa2c0df163a8518a804c4579d37e36/core/src/main/scala/kafka/log/Log.scala#L2377 -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
