vanzin commented on a change in pull request #25670: [SPARK-28869][CORE] Roll over event log files URL: https://github.com/apache/spark/pull/25670#discussion_r325391373
########## File path: core/src/test/scala/org/apache/spark/scheduler/EventLogFileReadersSuite.scala ########## @@ -0,0 +1,344 @@ +/* + * 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.scheduler + +import java.io.{ByteArrayInputStream, ByteArrayOutputStream, File} +import java.net.URI +import java.nio.charset.StandardCharsets +import java.util.zip.{ZipInputStream, ZipOutputStream} + +import scala.collection.mutable + +import com.google.common.io.{ByteStreams, Files} +import org.apache.hadoop.conf.Configuration +import org.apache.hadoop.fs.Path +import org.scalatest.BeforeAndAfter + +import org.apache.spark.{LocalSparkContext, SparkConf, SparkFunSuite} +import org.apache.spark.deploy.SparkHadoopUtil +import org.apache.spark.internal.Logging +import org.apache.spark.internal.config._ +import org.apache.spark.io.CompressionCodec +import org.apache.spark.scheduler.EventLogTestHelper._ +import org.apache.spark.util.Utils + +abstract class EventLogFileReadersSuite extends SparkFunSuite with LocalSparkContext + with BeforeAndAfter with Logging { + + protected val fileSystem = Utils.getHadoopFileSystem("/", + SparkHadoopUtil.get.newConfiguration(new SparkConf())) + protected var testDir: File = _ + protected var testDirPath: Path = _ + + before { + testDir = Utils.createTempDir(namePrefix = s"event log") + testDir.deleteOnExit() + testDirPath = new Path(testDir.getAbsolutePath()) + } + + after { + Utils.deleteRecursively(testDir) + } + + test("Retrieve EventLogFileReader correctly") { + def assertInstanceOfEventLogReader( + expectedClazz: Option[Class[_ <: EventLogFileReader]], + actual: Option[EventLogFileReader]): Unit = { + if (expectedClazz.isEmpty) { + assert(actual.isEmpty, s"Expected no EventLogFileReader instance but was " + + s"${actual.map(_.getClass).getOrElse("<None>")}") + } else { + assert(actual.isDefined, s"Expected an EventLogFileReader instance but was empty") + assert(expectedClazz.get.isAssignableFrom(actual.get.getClass), + s"Expected ${expectedClazz.get} but was ${actual.get.getClass}") + } + } + + def testForPathWithoutSeq( + path: Path, + isFile: Boolean, + expectedClazz: Option[Class[_ <: EventLogFileReader]]): Unit = { + if (isFile) { + Utils.tryWithResource(fileSystem.create(path)) { is => + is.writeInt(10) + } + } else { + fileSystem.mkdirs(path) + } + + val reader = EventLogFileReader.getEventLogReader(fileSystem, path) + assertInstanceOfEventLogReader(expectedClazz, reader) + val reader2 = EventLogFileReader.getEventLogReader(fileSystem, + fileSystem.getFileStatus(path)) + assertInstanceOfEventLogReader(expectedClazz, reader) + } + + // path with no last sequence - single event log + val reader1 = EventLogFileReader.getEventLogReader(fileSystem, new Path(testDirPath, "aaa"), + None) + assertInstanceOfEventLogReader(Some(classOf[SingleFileEventLogFileReader]), Some(reader1)) + + // path with last sequence - rolling event log + val reader2 = EventLogFileReader.getEventLogReader(fileSystem, + new Path(testDirPath, "eventlog_v2_aaa"), Some(3)) + assertInstanceOfEventLogReader(Some(classOf[RollingEventLogFilesFileReader]), Some(reader2)) + + // path - file (both path and FileStatus) + val eventLogFile = new Path(testDirPath, "bbb") + testForPathWithoutSeq(eventLogFile, isFile = true, Some(classOf[SingleFileEventLogFileReader])) + + // path - file starting with "." + val invalidEventLogFile = new Path(testDirPath, ".bbb") + testForPathWithoutSeq(invalidEventLogFile, isFile = true, None) + + // path - directory with "eventlog_v2_" prefix + val eventLogDir = new Path(testDirPath, "eventlog_v2_ccc") + testForPathWithoutSeq(eventLogDir, isFile = false, + Some(classOf[RollingEventLogFilesFileReader])) + + // path - directory with no "eventlog_v2_" prefix + val invalidEventLogDir = new Path(testDirPath, "ccc") + testForPathWithoutSeq(invalidEventLogDir, isFile = false, None) + } + + val allCodecs = Seq(None) ++ + CompressionCodec.ALL_COMPRESSION_CODECS.map(c => Some(CompressionCodec.getShortName(c))) + + allCodecs.foreach { codecShortName => + test(s"get information, list event log files, zip log files - with code $codecShortName") { + val appId = getUniqueApplicationId + val attemptId = None + + val conf = getLoggingConf(testDirPath, codecShortName) + val hadoopConf = SparkHadoopUtil.get.newConfiguration(conf) + + val writer = createWriter(appId, attemptId, testDirPath.toUri, conf, hadoopConf) + writer.start() + + // The test for writing events into EventLogFileWriter is covered to its own test suite. + val dummyData = Seq("dummy1", "dummy2", "dummy3") + dummyData.foreach(writer.writeEvent(_, flushLogger = true)) + + val logPathIncompleted = getCurrentLogPath(writer.logPath, isCompleted = false) + val readerOpt = EventLogFileReader.getEventLogReader(fileSystem, + new Path(logPathIncompleted)) + assertAppropriateReader(readerOpt) + val reader = readerOpt.get + + verifyReader(reader, new Path(logPathIncompleted), codecShortName, isCompleted = false) + + writer.stop() + + val logPathCompleted = getCurrentLogPath(writer.logPath, isCompleted = true) + val readerOpt2 = EventLogFileReader.getEventLogReader(fileSystem, new Path(logPathCompleted)) + assertAppropriateReader(readerOpt2) + val reader2 = readerOpt2.get + + verifyReader(reader2, new Path(logPathCompleted), codecShortName, isCompleted = true) + } + } + + protected def createWriter( + appId: String, + appAttemptId : Option[String], + logBaseDir: URI, + sparkConf: SparkConf, + hadoopConf: Configuration): EventLogFileWriter + + protected def getCurrentLogPath(logPath: String, isCompleted: Boolean): String + + protected def assertAppropriateReader(actualReader: Option[EventLogFileReader]): Unit + + protected def verifyReader( + reader: EventLogFileReader, + logPath: Path, + compressionCodecShortName: Option[String], + isCompleted: Boolean): Unit +} + +class SingleFileEventLogFileReaderSuite extends EventLogFileReadersSuite { + override protected def createWriter( + appId: String, + appAttemptId: Option[String], + logBaseDir: URI, + sparkConf: SparkConf, + hadoopConf: Configuration): EventLogFileWriter = { + new SingleEventLogFileWriter(appId, appAttemptId, logBaseDir, sparkConf, hadoopConf) + } + + override protected def assertAppropriateReader(actualReader: Option[EventLogFileReader]): Unit = { + assert(actualReader.isDefined, s"Expected an EventLogReader instance but was empty") + assert(actualReader.get.isInstanceOf[SingleFileEventLogFileReader], + s"Expected SingleFileEventLogReader but was ${actualReader.get.getClass}") + } + + override protected def getCurrentLogPath(logPath: String, isCompleted: Boolean): String = { + if (!isCompleted) logPath + EventLogFileWriter.IN_PROGRESS else logPath + } + + override protected def verifyReader( + reader: EventLogFileReader, + logPath: Path, + compressionCodecShortName: Option[String], + isCompleted: Boolean): Unit = { + val stats = fileSystem.getFileStatus(logPath) + + assert(stats.isFile) + assert(reader.rootPath === logPath) + assert(reader.lastSequence.isEmpty) + assert(reader.fileSizeForLastSequence === stats.getLen) + assert(reader.completed === isCompleted) + assert(reader.modificationTime === stats.getModificationTime) + assert(reader.listEventLogFiles.length === 1) + assert(reader.listEventLogFiles.map(_.getPath.toUri.getPath) === + Seq(logPath.toUri.getPath)) + assert(reader.compression === compressionCodecShortName) + assert(reader.allSize === stats.getLen) + + val underlyingStream = new ByteArrayOutputStream() + Utils.tryWithResource(new ZipOutputStream(underlyingStream)) { os => + reader.zipEventLogFiles(os) + } + + Utils.tryWithResource(new ZipInputStream( + new ByteArrayInputStream(underlyingStream.toByteArray))) { is => + + var entry = is.getNextEntry + assert(entry != null) + val actual = new String(ByteStreams.toByteArray(is), StandardCharsets.UTF_8) + val expected = Files.toString(new File(logPath.toString), StandardCharsets.UTF_8) + assert(actual === expected) + assert(is.getNextEntry === null) + } + } +} + +class RollingEventLogFilesReaderSuite extends EventLogFileReadersSuite { + allCodecs.foreach { codecShortName => + test(s"rolling event log files - codec $codecShortName") { + val appId = getUniqueApplicationId + val attemptId = None + + val conf = getLoggingConf(testDirPath, codecShortName) + conf.set(EVENT_LOG_ENABLE_ROLLING, true) + conf.set(EVENT_LOG_ROLLED_EVENT_LOG_MAX_FILE_SIZE.key, "1k") + + val writer = createWriter(appId, attemptId, testDirPath.toUri, conf, + SparkHadoopUtil.get.newConfiguration(conf)) + + writer.start() + + val dummyString = "dummy" + val dummyStringBytesLen = dummyString.getBytes(StandardCharsets.UTF_8).length + val expectedLines = mutable.ArrayBuffer[String]() + + // write log more than 2k (intended to roll over to 3 files) + val repeatCount = Math.floor((1024 * 2) / dummyStringBytesLen).toInt + (0 until repeatCount).foreach { _ => + expectedLines.append(dummyString) + writer.writeEvent(dummyString, flushLogger = true) + } + + val logPathIncompleted = getCurrentLogPath(writer.logPath, isCompleted = false) + val readerOpt = EventLogFileReader.getEventLogReader(fileSystem, + new Path(logPathIncompleted)) + verifyReader(readerOpt.get, new Path(logPathIncompleted), codecShortName, isCompleted = false) + assert(readerOpt.get.listEventLogFiles.length === 3) + + writer.stop() + + val logPathCompleted = getCurrentLogPath(writer.logPath, isCompleted = true) + val readerOpt2 = EventLogFileReader.getEventLogReader(fileSystem, new Path(logPathCompleted)) + verifyReader(readerOpt2.get, new Path(logPathCompleted), codecShortName, isCompleted = true) + assert(readerOpt.get.listEventLogFiles.length === 3) + } + } + + override protected def createWriter( + appId: String, + appAttemptId: Option[String], + logBaseDir: URI, + sparkConf: SparkConf, + hadoopConf: Configuration): EventLogFileWriter = { + new RollingEventLogFilesWriter(appId, appAttemptId, logBaseDir, sparkConf, hadoopConf) + } + + override protected def assertAppropriateReader(actualReader: Option[EventLogFileReader]): Unit = { + assert(actualReader.isDefined, s"Expected an EventLogReader instance but was empty") + assert(actualReader.get.isInstanceOf[RollingEventLogFilesFileReader], + s"Expected RollingEventLogFilesReader but was ${actualReader.get.getClass}") + } + + override protected def getCurrentLogPath(logPath: String, isCompleted: Boolean): String = logPath + + override protected def verifyReader( + reader: EventLogFileReader, + logPath: Path, + compressionCodecShortName: Option[String], + isCompleted: Boolean): Unit = { + import RollingEventLogFilesWriter._ + + val stats = fileSystem.getFileStatus(logPath) + assert(stats.isDirectory) + + val statsInDir = fileSystem.listStatus(logPath) + val eventFiles = statsInDir.filter(isEventLogFile).sortBy(s => getSequence(s.getPath.getName)) + assert(eventFiles.nonEmpty) + val lastEventFile = eventFiles.last + val allLen = eventFiles.map(_.getLen).sum + + assert(reader.rootPath === logPath) + assert(reader.lastSequence === Some(getSequence(lastEventFile.getPath.getName))) + assert(reader.fileSizeForLastSequence === lastEventFile.getLen) + assert(reader.completed === isCompleted) + assert(reader.modificationTime === lastEventFile.getModificationTime) + assert(reader.listEventLogFiles.length === eventFiles.length) + assert(reader.listEventLogFiles.map(_.getPath) === eventFiles.map(_.getPath)) + assert(reader.compression === compressionCodecShortName) + assert(reader.allSize === allLen) + + val underlyingStream = new ByteArrayOutputStream() + Utils.tryWithResource(new ZipOutputStream(underlyingStream)) { os => + reader.zipEventLogFiles(os) + } + + Utils.tryWithResource(new ZipInputStream( + new ByteArrayInputStream(underlyingStream.toByteArray))) { is => Review comment: Indent more ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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