Max Xie created HDFS-15886:
-------------------------------
Summary: Add a way to get protected dirs from a special
configuration file
Key: HDFS-15886
URL: https://issues.apache.org/jira/browse/HDFS-15886
Project: Hadoop HDFS
Issue Type: New Feature
Components: namenode
Affects Versions: 3.4.0
Reporter: Max Xie
Assignee: Max Xie
We used protected dirs to ensure that important data directories cannot be
deleted by mistake. But protected dirs can only be configured in hdfs-site.xml.
For ease of management, we add a way to get the list of protected dirs from a
special configuration file.
How to use.
1. set the config in hdfs-site.xml
```
<property>
<name>dfs.protected.directories.config.file.enable</name>
<value>true</value>
</property>
<property>
<name>fs.protected.directories</name>
<value>file:///path/to/protected.dirs.config</value>
</property>
```
2. add some protected dirs to the config file
(file:///path/to/protected.dirs.config)
```
# protect directories
/1
/2/3
```
3. done
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