Question

当然，我已经在我的Ubuntu系统中安装了Hadoop。我开始了。以下是详细信息：

krish @ krish-VirtualBox：〜$ start-dfs.sh 14/10/20 13:16:16 WARN util.NativeCodeLoader：无法为您的平台加载native-hadoop库...使用适用的builtin-java类

在[localhost]

上启动名称节点

localhost: starting namenode, logging to /usr/local/hadoop/logs/hadoop-krish-namenode-krish-VirtualBox.out

localhost: starting datanode, logging to /usr/local/hadoop/logs/hadoop-krish-datanode-krish-VirtualBox.out

Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/logs/hadoop-krish-secondarynamenode-krish-VirtualBox.out

14/10/20 13:16:35 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

krish@krish-VirtualBox:~$ start-yarn.sh

starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop/logs/yarn-krish-resourcemanager-krish-VirtualBox.out

localhost: starting nodemanager, logging to /usr/local/hadoop/logs/yarn-krish-nodemanager-krish-VirtualBox.out

krish@krish-VirtualBox:~$ jps

3065 NodeManager

2800 SecondaryNameNode

2941 ResourceManager

3307 Jps

2497 NameNode

krish@krish-VirtualBox:~$

我只是想知道所有事情是否都很完美。我没有在清单中看到Datanode。

Answer 1

停止群集。

如果您在core-site.xml中明确定义了tmp目录位置，则删除这些目录下的所有文件。

如果你在hdfs-site.xml中有专门定义的数据节点和namenode目录，那么删除这些目录下的所有文件。

如果你还没有在core-site或hdfs-site中定义任何内容，那么请删除/ tmp / hadoop- * nameofyourhadoop用户下的所有文件

格式化namenode

它应该有用

Hadoop Datanode没有启动

1 个答案: