运行mapreduce hadoop作业时，纱线UI中未显示应用程序?

问题描述

我正在使用Hadoop2.2.我看到我的工作成功完成了.我可以浏览文件系统以找到输出.但是，当我浏览http://NNode:8088/cluster/apps时，无法看到到目前为止已完成的任何应用程序(我运行了3个wordcount作业，但此处未显示任何作业).

I am using Hadoop2.2. I see that my jobs are completed with success. I can browse the filesystem to find the output. However, when I browse http://NNode:8088/cluster/apps, I am unable to see any applications that have been completed so far ( I ran 3 wordcount jobs, but none of it is seen here).

是否需要考虑任何配置?

Are there any configurations that need to be taken into account?

这是yarn-site.xml

<property>
        <name>yarn.resourcemanager.hostname</name>
        <value>NNode</value>
    </property>
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
<!--
  <property>
    <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
    <value>org.apache.hadoop.mapred.ShuffleHandler</value>
  </property>
-->

这里是mapred-site.xml:

<property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>

我也正在运行作业历史记录服务器:

I have job history server running too:

jps
4422 NameNode
5452 Jps
4695 SecondaryNameNode
4924 ResourceManager
72802 Jps
5369 JobHistoryServer

推荐答案

您可以参考

                    conf.set("fs.defaultFS", "hdfs://master:9000");
                    conf.set("mapreduce.jobtracker.address", "master:54311");
                    conf.set("mapreduce.framework.name", "yarn");
                    conf.set("yarn.resourcemanager.address", "master:8032");

我在集群中进行了测试.可行！

I tested in my cluster. It works!

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