Java Hadoop:启动容器失败错误

我刚刚安装了一个多节点hadoop集群，其中有一台namenode机器和两个slavenodes。但是，当我运行mapreduce任务时，我不断遇到以下错误：

容器_1453020503065_0030_01_000009的容器启动失败

:java.lang.IllegalArgumentException:java.net.UnknownHostException: HOME

这里HOME和shubhranshu-OptiPlex-9020是从机的主机名。我已将它们的IP地址和主机名放在/etc/hosts文件中。 我的/etc/hosts文件如下所示：

10.0.3.107  HadoopMaster
10.0.3.108  HadoopSlave1
10.0.3.109  HadoopSlave2
127.0.0.1       localhost amrit
#127.0.1.1      amrit
10.0.3.107      amrit
10.0.3.108      HOME
10.0.3.109      shubhranshu-OptiPlex-9020
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

---

请告诉我是否需要添加更多内容。谢谢大家!

按如下方式修改/etc/hosts文件：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

还修改10.0.3.108机器的/etc/hosts，如下所示：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

并对10.0.3.109机器中的/etc/hosts进行如下修改：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

---

按如下方式修改/etc/hosts文件：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

还修改10.0.3.108机器的/etc/hosts，如下所示：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

并对10.0.3.109机器中的/etc/hosts进行如下修改：

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster amrit
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1 HOME
    10.0.3.109      HadoopSlave2

    127.0.0.1       localhost 
    10.0.3.107      HadoopMaster 
    10.0.3.108      HadoopSlave1
    10.0.3.109      HadoopSlave2 shubhranshu-OptiPlex-9020

---

您是否在群集的所有主机之间同步了/etc/hosts文件？是否有充分的理由使用重复的主机名？在所有主机之间，前3行是同步的。您是否在群集的所有主机之间同步了/etc/hosts文件？是否有充分的理由使用重复的主机名？在所有主机之间，前3行是同步的。