HeartSaVioR commented on code in PR #50508: URL: https://github.com/apache/spark/pull/50508#discussion_r2034432234
########## sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/FailureInjectionCheckpointFileManager.scala: ########## @@ -0,0 +1,304 @@ +/* + * 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.spark.sql.execution.streaming.state + +import java.io._ +import java.net.URI + +import org.apache.hadoop.conf.Configuration +import org.apache.hadoop.fs._ +import org.apache.hadoop.fs.permission.FsPermission +import org.apache.hadoop.util.Progressable + +import org.apache.spark.internal.Logging +import org.apache.spark.sql.execution.streaming.CheckpointFileManager.{CancellableFSDataOutputStream, RenameBasedFSDataOutputStream} +import org.apache.spark.sql.execution.streaming.FileSystemBasedCheckpointFileManager + +/** + * A wrapper file output stream that will throw exception in close() and put the underlying + * stream to FailureInjectionFileSystem.delayedStreams + * @param stream stream to be wrapped + */ +class DelayCloseFSDataOutputStreamWrapper( + stream: CancellableFSDataOutputStream, + injectionState: FailureInjectionState) + extends CancellableFSDataOutputStream(stream.getWrappedStream) with Logging { + val originalStream: CancellableFSDataOutputStream = stream + + var closed: Boolean = false + + override def close(): Unit = { + if (!closed) { + closed = true + injectionState.delayedStreams = injectionState.delayedStreams :+ originalStream + throw new IOException("Fake File Stream Close Failure") + } + } + + /** Cancel is not needed in unit tests */ + override def cancel(): Unit = {} +} + +/** + * A wrapper checkpoint file manager that might inject failures in some function calls. + * Used in unit tests to simulate failure scenarios. + * This can be put into SQLConf.STREAMING_CHECKPOINT_FILE_MANAGER_CLASS to provide failure + * injection behavior. + * + * @param path The path to the checkpoint directory, passing to the parent class + * @param hadoopConf hadoop conf that will be passed to the parent class + */ +class FailureInjectionCheckpointFileManager(path: Path, hadoopConf: Configuration) + extends FileSystemBasedCheckpointFileManager(path, hadoopConf) with Logging { + + // Injection state for the path + private val injectionState = FailureInjectionFileSystem.getInjectionState(path.toString) + + override def createAtomic(path: Path, + overwriteIfPossible: Boolean): CancellableFSDataOutputStream = { + injectionState.failureCreateAtomicRegex.foreach { pattern => + if (path.toString.matches(pattern)) { + throw new IOException("Fake File System Create Atomic Failure") + } + } + + var shouldDelay = false + injectionState.createAtomicDelayCloseRegex.foreach { pattern => + if (path.toString.matches(pattern)) { + shouldDelay = true + } + } + val ret = new RenameBasedFSDataOutputStream(this, path, overwriteIfPossible) + if (shouldDelay) { + new DelayCloseFSDataOutputStreamWrapper(ret, injectionState) + } else { + ret + } + } + + override def renameTempFile(srcPath: Path, dstPath: Path, overwriteIfPossible: Boolean): Unit = { + if (injectionState.allowOverwriteInRename || !fs.exists(dstPath)) { + super.renameTempFile(srcPath, dstPath, overwriteIfPossible) + } else { + logWarning(s"Skip renaming temp file $srcPath to $dstPath because it already exists.") + } + } + + override def list(path: Path, filter: PathFilter): Array[FileStatus] = { + super.list(path, filter) + } + + override def exists(path: Path): Boolean = { + if (injectionState.shouldFailExist) { + throw new IOException("Fake File Exists Failure") + } + super.exists(path) + } +} + +/** + * A class that contains the failure injection state for a path. + */ +class FailureInjectionState { + // File names matching this regex will cause the copyFromLocalFile to fail + var failPreCopyFromLocalFileNameRegex: Seq[String] = Seq.empty + // File names matching this regex will cause the createAtomic to fail and put the streams in Review Comment: ```suggestion // File names matching this regex will cause the close() to fail and put the streams in ``` -- This is an automated message from the Apache Git Service. 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