Question

我试图运行一些hadoop程序来提取Ubuntu中一些摘要的关键字。当我使用Hadoop运行我的程序时，我收到以下错误。

 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable



INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
 WARN mapreduce.JobSubmitter: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
 INFO input.FileInputFormat: Total input paths to process : 1
 INFO mapreduce.JobSubmitter: number of splits:1
 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1404812840999_0001
 INFO impl.YarnClientImpl: Submitted application application_1404812840999_0001
 INFO mapreduce.Job: The url to track the job: http://shiva-VirtualBox:8088/proxy/application_1404812840999_0001/
 INFO mapreduce.Job: Running job: job_1404812840999_0001
 INFO mapreduce.Job: Job job_1404812840999_0001 running in uber mode : false
 INFO mapreduce.Job:  map 0% reduce 0%
 INFO mapreduce.Job: Job job_1404812840999_0001 failed with state FAILED due to: Application application_1404812840999_0001 failed 2 times due to AM Container for appattempt_1404812840999_0001_000002 exited with  exitCode: 1 due to: Exception from container-launch: org.apache.hadoop.util.Shell$ExitCodeException: 
org.apache.hadoop.util.Shell$ExitCodeException: 
    at org.apache.hadoop.util.Shell.runCommand(Shell.java:505)
    at org.apache.hadoop.util.Shell.run(Shell.java:418)
    at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:650)
    at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:195)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:283)
    at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:79)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)


Container exited with a non-zero exit code 1
.Failing this attempt.. Failing the application.
14/07/08 14:21:44 INFO mapreduce.Job: Counters: 0

导致此错误的原因是什么？

请注意，我将mapreduce项目转换为maven项目，以便在我的代码中使用lucene库。

Answer 1

你的资源经理真的在/0.0.0.0:8032上吗？它也是你没有使用Toolrunner的接缝，所以尝试重写你的mapreduce Hadoop: Implementing the Tool interface for MapReduce driver。

希望有所帮助

Answer 2

增加了线程数，充分利用了JVM内存和CPU。请增加JVM大小并增加Mapper和reducer任务的内存限制。 conf.set（“mapreduce.map.memory.mb”，“4096”）; conf.set（“mapreduce.map.java.opts”，“ - Xmx3500m”）;

Hadoop mapreduce容器以非零退出代码1退出

2 个答案: