Chapter 14. Uninstalling HDP

Use the following instructions to uninstall HDP:

Stop all the installed HDP services.
If HCatalog is installed, execute the following command on all the cluster nodes:
```
yum remove hcatalog\* 
```
If Hive is installed, execute the following command on all the cluster nodes:
```
yum remove hive\* 
```
If Tez is installed, execute the following command on all the cluster nodes:
```
yum remove tez
```
If HBase is installed, execute the following command on all the cluster nodes:
```
yum remove hbase\* 
```
If ZooKeeper is installed, execute the following command on all the cluster nodes:
```
yum remove zookeeper\* 
```
If Pig is installed, execute the following command on all the cluster nodes:
```
yum remove pig\* 
```
If compression libraries are installed, execute the following command on all the cluster nodes:
```
yum remove snappy\* 
yum remove hadoop-lzo\* 
```
Uninstall Hadoop. Execute the following command on all the cluster nodes:
```
yum remove hadoop\* 
```
Uninstall ExtJS libraries and MySQL connector. Execute the following command on all the cluster nodes:
```
yum remove extjs-2.2-1 mysql-connector-java-5.0.8-1\* 
```
Delete Hadoop directories. If your Hadoop Home directory is "/usr/lib/hadoop" for example, delete that directory and its subdirectories.
```
rm -rf /usr/lib/hadoop
```