/bin/bash: line 0: fg: no job control_fg:no job control-优快云博客

本文链接：https://blog.youkuaiyun.com/wolvesqun/article/details/52804468

本文详细介绍了如何在Eclipse IDE中配置Hadoop的MapReduce和YARN环境，包括复制配置文件到项目src目录，具体配置mapred-site.xml和yarn-site.xml文件的方法。特别强调了classpaths必须使用绝对路径。

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按照我的步骤走，这些问题都能解决，我使用的IDE是eclipse

1：复制Hadoop的4个配置文件放到src目录下面：core-site.xml,hdfs-site.xml,log4j.properties,mapred-site.xml,yarn-site.xml

2:配置mapred-site.xml

<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
    <property>
        <name>mapred.remote.os</name>
        <value>Linux</value>
    </property>
    <property>
        <name>mapreduce.app-submission.cross-platform</name>
        <value>true</value>
    </property>
    <property>
    <name>mapreduce.application.classpath</name>
    <value>
        /opt/hadoop-2.6.0/etc/hadoop,
        /opt/hadoop-2.6.0/share/hadoop/common/*,
        /opt/hadoop-2.6.0/share/hadoop/common/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/hdfs/*,
        /opt/hadoop-2.6.0/share/hadoop/hdfs/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/mapreduce/*,
        /opt/hadoop-2.6.0/share/hadoop/mapreduce/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/yarn/*,
        /opt/hadoop-2.6.0/share/hadoop/yarn/lib/*
    </value>
</property>    
    <property>
        <name>mapreduce.jobhistory.address</name>
        <value>master:10020</value>
    </property>
       <property>
                <name>mapreduce.jobhistory.webapp.address</name>
                <value>master:19888</value>
        </property>
</configuration>

注意mapreduce.application.classpath一定是绝对路径，不要搞什么$HADOOP_HOME,我这里反正是报错的

3：修改yarn-site.xml

<configuration>
<!-- Site specific YARN configuration properties -->
  <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>master:8032</value>
    </property>
<property>
    <name>yarn.application.classpath</name>
    <value>
        /opt/hadoop-2.6.0/etc/hadoop,
        /opt/hadoop-2.6.0/share/hadoop/common/*,
        /opt/hadoop-2.6.0/share/hadoop/common/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/hdfs/*,
        /opt/hadoop-2.6.0/share/hadoop/hdfs/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/mapreduce/*,
        /opt/hadoop-2.6.0/share/hadoop/mapreduce/lib/*,
        /opt/hadoop-2.6.0/share/hadoop/yarn/*,
        /opt/hadoop-2.6.0/share/hadoop/yarn/lib/*
    </value>
  </property>
</configuration>