# Store data in HDFS

## Hadoop cluster

Beagle hadoop clusters has 8 computers (node)

[Hdfs health](http://165.132.137.159:9870/dfshealth.html#tab-datanode)

![Hdfshealth](//_static/_images/dfshealth.png)

## Access HDFS

### Using Hadoop web explorer

[Hadoop web explorer](
http://165.132.137.159:9870/explorer.html)

### Using commandline

#### Remote access a node in hadoop cluster over ssh

```bash
ssh beagle@165.132.137.241
```

#### Access file

```bash
hadoop fs -ls /beagle
```

![folder beagle](//_static/_images/hsdfs_folder_beagle.png)

### Using http api

 - http://165.132.137.159:8080/api/api/hdfs?hdfsPath=<<hdfs_url>>

## Beagle project structure

 - Each beagle project is located in a folder in HDFS

 - a beagle project has some folders

 ![beagle project structure](//_static/_images/beagle_project_structure.png)

 - 360_photos: panorama images
 - _origional: contains uploaded data from web
 - bim: ifc, fbx, ...
 - data: point cloud data
 - index: index of point cloud data
 - meta: meta data of point cloud data
 - operation: contains output of other map-reduce job (for example: change detection, RANSAC,...)
 - sample: sample data of point cloud
 - tiling: LOD PCD data