Question

我在3个ubuntu 12.10实例，1个主服务器和2个服务器的amazon ec2上使用hadoop-1.0.4，就在〜目录下。现在start-all.sh和stop-all.sh没问题，但是当我在master或slave上运行jps时，它什么都不打印。然后我测试了hadoop示例：

~/hadoop$ bin/hadoop jar hadoop-examples-1.0.4.jar pi 10 10000

显示

    Exception in thread "main" java.io.IOException: Permission denied
    at java.io.UnixFileSystem.createFileExclusively(Native Method)
    at java.io.File.createTempFile(File.java:1879)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:115)

但是我已经chmod 777 -R tmp到tmp文件夹了。

~/hadoop$ sudo bin/hadoop jar hadoop-examples-1.0.4.jar pi 10 10000

使用sudo，它会产生

    13/05/12 03:58:11 WARN conf.Configuration: DEPRECATED: hadoop-site.xml
     found in the classpath. Usage of hadoop-site.xml is deprecated.  
    Instead use core-site.xml, mapred-site.xml and hdfs-site.xml to  
    override properties of core-default.xml, mapred-default.xml  
    and hdfs-default.xml respectively
    Number of Maps  = 10
    Samples per Map = 10000
    13/05/12 03:58:12 WARN fs.FileSystem: "54.235.101.85:50001" is a deprecated   
    filesystem name. Use "hdfs://54.235.101.85:50001/" instead.
    13/05/12 03:58:13 INFO ipc.Client: Retrying connect to server: 
    hdmaster/54.235.101.85:50001. Already tried 0 time(s).
    13/05/12 03:58:14 INFO ipc.Client: Retrying connect to server: 
    hdmaster/54.235.101.85:50001. Already tried 1 time(s).
    13/05/12 03:58:15 INFO ipc.Client: Retrying connect to server: 
    hdmaster/54.235.101.85:50001. Already tried 2 time(s).

然后无法连接。那么问题是什么？我应该把sudo运行这些例子吗？非常感谢。

Answer 1

我认为，问题是，54.235.101.85被认为是一个公共IP地址。在所有节点中使用ifconfig获取IP地址列表，并检查以10.x.x.x / 172.x.x.x / 192.x.x.x开头的IP。如果找到，请相应地修改所有节点中的配置文件。

hadoop示例没有在亚马逊ec2上运行

1 个答案: