Question

我有一个Ubuntu 14.04 LTS，带有一个hadoop 2.4.0单节点集群。当我在控制台上执行yarn classpath时，给我这个：

/usr/local/hadoop/etc/hadoop:/usr/local/hadoop/etc/hadoop:/usr/local/hadoop/etc/hadoop:/usr/local/hadoop/share/hadoop/common/lib/*:/usr/local/hadoop/share/hadoop/common/*:/usr/local/hadoop/share/hadoop/hdfs:/usr/local/hadoop/share/hadoop/hdfs/lib/*:/usr/local/hadoop/share/hadoop/hdfs/*:/usr/local/hadoop/share/hadoop/yarn/lib/*:/usr/local/hadoop/share/hadoop/yarn/*:/usr/local/hadoop/share/hadoop/mapreduce/lib/*:/usr/local/hadoop/share/hadoop/mapreduce/*:/usr/local/hadoop/contrib/capacity-scheduler/*.jar:/usr/local/hadoop/share/hadoop/yarn/*:/usr/local/hadoop/share/hadoop/yarn/lib/*

如您所见，第一个值重复三次。我找了一种重新定义或重置它的方法。据我所知，唯一的方法就是在yarn-site.xml重新定义一个属性，如下所示：

 <property>
    <description>Classpath for typical applications.</description>
     <name>yarn.application.classpath</name>
        <value>
        $HADOOP_CONF_DIR, $HADOOP_COMMON_HOME/share/hadoop/common/*, $HADOOP_COMMON_HOME/share/hadoop/common/lib/*, $HADO$
     </value>
  </property>

但是yarn.application.classpath保持不变，没有变化，即使我停止了hadoop的每个进程并再次启动它们。我还有什么其他选择？我在这里做错了什么？

更新：我在hadoop-env.sh中定义了$ HADOOP_CONF_DIR的值，如下：

export HADOOP_CONF_DIR=${HADOOP_CONF_DIR:-"/usr/local/hadoop/etc/hadoop"}

重新定义yarn.application.classpath值

0 个答案: