Question

在hadoop中执行jar时，我收到以下错误：

16/11/04 18:32:59 INFO mapreduce.Job: Task Id : attempt_1478261728730_0005_m_000000_2, Status : FAILED
Exception from container-launch.
Container id: container_1478261728730_0005_01_000004
Exit code: 1
Stack trace: ExitCodeException exitCode=1: 
    at org.apache.hadoop.util.Shell.runCommand(Shell.java:538)
    at org.apache.hadoop.util.Shell.run(Shell.java:455)
    at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
    at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:211)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:302)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:82)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)


Container exited with a non-zero exit code 1

16/11/04 18:33:09 INFO mapreduce.Job:  map 100% reduce 0%

这是应用程序日志：

Native code library failed to load.
java.lang.UnsatisfiedLinkError: no opencv_java2411 in java.library.pathopencv_java2411

我不知道这是什么意思，请有人帮忙吗？

Answer 1

您在群集节点上缺少opencv。有关如何处理此问题的所有详细信息，请参阅here。

简而言之，您需要在执行程序上安装opencv。您无法以便携方式将其编译到作业.jar中，因为它是C而不是Java代码。

更新：请注意，Hadoop执行程序的环境由hadoop-env.sh设置。所以它需要包含如下行：

JAVA_LIBRARY_PATH=${JAVA_LIBRARY_PATH}:/etc/opencv/lib

在mapreduce任务期间，容器以非零退出代码1错误退出

1 个答案: