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102 changes: 102 additions & 0 deletions
102
core/src/main/scala/org/apache/spark/ThreadDumpCollector.scala
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.spark | ||
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| import java.nio.charset.StandardCharsets | ||
| import java.time.Instant | ||
| import java.util.concurrent.TimeUnit | ||
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| import org.apache.hadoop.fs.{FileSystem, Path} | ||
| import org.apache.hadoop.fs.permission.FsPermission | ||
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| import org.apache.spark.deploy.SparkHadoopUtil | ||
| import org.apache.spark.internal.{Logging, LogKeys, MDC} | ||
| import org.apache.spark.internal.config.{THREAD_DUMP_COLLECTOR_DIR, | ||
| THREAD_DUMP_COLLECTOR_OUTPUT_TYPE} | ||
| import org.apache.spark.util.{ThreadUtils, Utils} | ||
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| /** | ||
| * Creates a thread dump collector thread which will call the specified collectThreadDumps | ||
| * function at intervals of intervalMs. | ||
| * | ||
| * @param collectThreadDumps the thread dump collector function to call. | ||
| * @param name the thread name for the thread dump collector. | ||
| * @param intervalMs the interval between stack trace collections. | ||
| */ | ||
| private[spark] class ThreadDumpCollector( | ||
| collectThreadDumps: () => Unit, | ||
| name: String, | ||
| intervalMs: Long) extends Logging { | ||
| // Executor for the thread dump collector task | ||
| private val threadDumpCollector = ThreadUtils.newDaemonSingleThreadScheduledExecutor(name) | ||
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| /** Schedules a task to collect the thread dumps */ | ||
| def start(): Unit = { | ||
| val threadDumpCollectorTask = new Runnable() { | ||
| override def run(): Unit = Utils.logUncaughtExceptions(collectThreadDumps()) | ||
| } | ||
| threadDumpCollector.scheduleAtFixedRate(threadDumpCollectorTask, intervalMs, intervalMs, | ||
| TimeUnit.MILLISECONDS) | ||
| } | ||
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| def stop(): Unit = { | ||
| threadDumpCollector.shutdown() | ||
| threadDumpCollector.awaitTermination(10, TimeUnit.SECONDS) | ||
| } | ||
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| } | ||
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| private[spark] object ThreadDumpCollector extends Logging { | ||
| def saveThreadDumps(env: SparkEnv): Unit = { | ||
| env.conf.get(THREAD_DUMP_COLLECTOR_OUTPUT_TYPE) match { | ||
| case "LOG" => writeThreadDumpsToLog(env) | ||
| case "FILE" => writeThreadDumpsToFile(env) | ||
| } | ||
| } | ||
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| /** Print all thread dumps */ | ||
| private def writeThreadDumpsToLog(env: SparkEnv): Unit = { | ||
| logWarning(log"Thread dumps from ${MDC(LogKeys.EXECUTOR_ID, env.executorId)}:\n" + | ||
| log"${MDC(LogKeys.THREAD_DUMPS, Utils.getThreadDump().map(_.toString).mkString)}") | ||
| } | ||
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| private def writeThreadDumpsToFile(env: SparkEnv): Unit = { | ||
| val timestamp = Instant.now().getEpochSecond().toString() | ||
| val threadDumpFileName = env.conf.getAppId + "-" + env.executorId + "-" + timestamp + ".txt" | ||
| val collectedThreadDump = Utils.getThreadDump().map(_.toString).mkString | ||
| val hadoopConf = SparkHadoopUtil.get.newConfiguration(env.conf) | ||
| val rootDir = env.conf.get(THREAD_DUMP_COLLECTOR_DIR) | ||
| val fileSystem: FileSystem = new Path(rootDir).getFileSystem(hadoopConf) | ||
| val threadDumpFilePermissions = new FsPermission(Integer.parseInt("770", 8).toShort) | ||
| val dfsLogFile: Path = fileSystem.makeQualified(new Path(rootDir, threadDumpFileName)) | ||
| try { | ||
| val outputStream = SparkHadoopUtil.createFile(fileSystem, dfsLogFile, true) | ||
| fileSystem.setPermission(dfsLogFile, threadDumpFilePermissions) | ||
| outputStream.write(collectedThreadDump.getBytes(StandardCharsets | ||
| .UTF_8)) | ||
| outputStream.close() | ||
| } catch { | ||
| case e: Exception => | ||
| logError( | ||
| log"Could not save thread dumps into file from executor ${ | ||
| MDC(LogKeys.EXECUTOR_ID, | ||
| env.executorId) | ||
| }", e) | ||
| } | ||
| } | ||
| } |
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22 changes: 22 additions & 0 deletions
22
core/src/test/scala/org/apache/spark/ThreadDumpCollectorSuite.scala
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.spark | ||
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| class ThreadDumpCollectorSuite { | ||
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| } |