HeartSaVioR 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_r325450559
########## 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) ++ Review comment: This is to append "None" into available codecs. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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