【发布时间】：2017-02-21 14:02:39
【问题描述】：
我正在 spark 独立集群中编写 spark 应用程序。当我运行以下代码时，我得到了 ClassNotFoundException（参考屏幕截图）。所以，我关注了worker(192.168.111.202)的日志。
package main
import org.apache.spark.SparkConf
import org.apache.spark.SparkContext
object mavenTest {
def main(args: Array[String]): Unit = {
val conf = new SparkConf().setAppName("stream test").setMaster("spark://192.168.111.201:7077")
val sc = new SparkContext(conf)
val input = sc.textFile("file:///root/test")
val words = input.flatMap { line => line.split(" ") }
val counts = words.map(word => (word, 1)).reduceByKey { case (x, y) => x + y }
counts.saveAsTextFile("file:///root/mapreduce")
}
}
以下日志是工人的日志。这些日志说工人杀死执行者，并发生错误。 Worker为什么要杀executor？能给点线索吗？
16/03/24 20:16:48 INFO Worker: Asked to launch executor app-20160324201648-0011/0 for stream test
16/03/24 20:16:48 INFO SecurityManager: Changing view acls to: root
16/03/24 20:16:48 INFO SecurityManager: Changing modify acls to: root
16/03/24 20:16:48 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(root); users with modify permissions: Set(root)
16/03/24 20:16:48 INFO ExecutorRunner: Launch command: "/usr/java/jdk1.8.0_73/jre/bin/java" "-cp" "/opt/spark-1.5.2-bin-hadoop2.6/sbin/../conf/:/opt/spark-1.5.2-bin-hadoop2.6/lib/spark-assembly-1.5.2-hadoop2.6.0.jar:/opt/spark-1.5.2-bin-hadoop2.6/lib/datanucleus-core-3.2.10.jar:/opt/spark-1.5.2-bin-hadoop2.6/lib/datanucleus-rdbms-3.2.9.jar:/opt/spark-1.5.2-bin-hadoop2.6/lib/datanucleus-api-jdo-3.2.6.jar:/etc/hadoop" "-Xms1024M" "-Xmx1024M" "-Dspark.driver.port=40243" "org.apache.spark.executor.CoarseGrainedExecutorBackend" "--driver-url" "akka.tcp://sparkDriver@192.168.111.201:40243/user/CoarseGrainedScheduler" "--executor-id" "0" "--hostname" "192.168.111.202" "--cores" "1" "--app-id" "app-20160324201648-0011" "--worker-url" "akka.tcp://sparkWorker@192.168.111.202:53363/user/Worker"
16/03/24 20:16:54 INFO Worker: Asked to kill executor app-20160324201648-0011/0
16/03/24 20:16:54 INFO ExecutorRunner: Runner thread for executor app-20160324201648-0011/0 interrupted
16/03/24 20:16:54 INFO ExecutorRunner: Killing process!
16/03/24 20:16:54 ERROR FileAppender: Error writing stream to file /opt/spark-1.5.2-bin-hadoop2.6/work/app-20160324201648-0011/0/stderr
java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:283)
at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at org.apache.spark.util.logging.FileAppender.appendStreamToFile(FileAppender.scala:70)
at org.apache.spark.util.logging.FileAppender$$anon$1$$anonfun$run$1.apply$mcV$sp(FileAppender.scala:39)
at org.apache.spark.util.logging.FileAppender$$anon$1$$anonfun$run$1.apply(FileAppender.scala:39)
at org.apache.spark.util.logging.FileAppender$$anon$1$$anonfun$run$1.apply(FileAppender.scala:39)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1699)
at org.apache.spark.util.logging.FileAppender$$anon$1.run(FileAppender.scala:38)
16/03/24 20:16:54 INFO Worker: Executor app-20160324201648-0011/0 finished with state KILLED exitStatus 143
16/03/24 20:16:54 INFO Worker: Cleaning up local directories for application app-20160324201648-0011
16/03/24 20:16:54 INFO ExternalShuffleBlockResolver: Application app-20160324201648-0011 removed, cleanupLocalDirs = true
【问题讨论】：
-
ClassNotFoundException 的完整行是什么？
-
它是“16/03/25 03:03:32 WARN TaskSetManager: Lost task 0.0 in stage 0.0 (TID 0, 192.168.111.202): java.lang.ClassNotFoundException: main.mapreduce$$ anonfun$2"
标签： eclipse scala apache-spark