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core/src/services/hdfs_native/docs.md

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 A distributed file system that provides high-throughput access to application data.
+Using [Native Rust HDFS client](https://github.com/Kimahriman/hdfs-native).
+
+## Capabilities
+
+This service can be used to:
+
+- [x] stat
+- [x] read
+- [x] write
+- [x] create_dir
+- [x] delete
+- [x] rename
+- [x] list
+- [x] blocking
+- [x] append
+
+## Differences with webhdfs
+
+[Webhdfs][crate::services::Webhdfs] is powered by hdfs's RESTful HTTP API.
+
+## Differences with hdfs
+
+[hdfs][crate::services::Hdfs] is powered by libhdfs and require the Java dependencies
+
+## Features
+
+HDFS-native support needs to enable feature `services-hdfs-native`.
+
+## Configuration
+
+- `root`: Set the work dir for backend.
+- `url`: Set the url for backend.
+- `enable_append`: enable the append capacity. Default is false. 
+