hadoop初始stop it first
时间: 2024-06-18 12:00:36 浏览: 10
Hadoop是一个开源的分布式计算框架,其主要用于处理大规模数据集。如果您需要停止Hadoop,则需要执行以下步骤:
1. 在终端中输入以下命令,以停止所有Hadoop进程:
```
$HADOOP_HOME/sbin/stop-all.sh
```
其中`$HADOOP_HOME`是您安装Hadoop的路径。
2. 如果您只需要停止某些特定的Hadoop进程,则可以使用以下命令:
```
$HADOOP_HOME/sbin/stop-dfs.sh // 停止分布式文件系统
$HADOOP_HOME/sbin/stop-yarn.sh // 停止资源管理器
```
3. 如果您想要停止某个特定节点上的Hadoop进程,则可以使用以下命令:
```
$HADOOP_HOME/sbin/hadoop-daemon.sh stop <daemon-name>
```
其中`<daemon-name>`是您要停止的守护进程的名称,例如`namenode`、`datanode`、`resourcemanager`、`nodemanager`等。
相关问题
namenode is running as process stop it first
If you want to stop the NameNode process in Hadoop, you can use the following command:
```
hadoop-daemon.sh stop namenode
```
This will stop the NameNode process. If you're running Hadoop in a cluster, you may need to run this command on each node where the NameNode is running.
Alternatively, you can use the `jps` command to find the process ID (PID) of the NameNode, and then use the `kill` command to stop the process. For example:
```
jps
```
This will list all the Java processes running on your system. Look for the process with the name `NameNode` and note its PID. Then, use the following command to stop the process:
```
kill <PID>
```
Replace `<PID>` with the actual PID of the NameNode process. This will send a signal to the process to stop gracefully. If the process doesn't stop, you can use the `kill -9 <PID>` command to force it to stop. However, this may cause data loss or other issues, so use it as a last resort.
hadoop103: nodemanager is running as process 86649. Stop it first. hadoop104: nodemanager is running as process 104884. Stop it first.
这是一个警告信息,提示在启动 Hadoop nodemanager 之前需要先停止已经在运行的 nodemanager 进程,以避免进程冲突。
您需要使用以下命令停止已经在运行的 nodemanager 进程:
```
yarn --daemon stop nodemanager
```
这将会停止运行在当前节点的 nodemanager 进程,如果您有多个节点,需要在每个节点上执行相同的命令来停止 nodemanager 进程。当已经停止了所有 nodemanager 进程后,您可以尝试重新启动 nodemanager 服务。
相关推荐
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)