# Beam File Output

## <img src="/files/g17JHnnqgfjouiiqBOHq" alt="" data-size="line"> Beam File Output

### Description <a href="#description" id="description"></a>

The Beam File Output transform writes files using a file definition with the Beam execution engine.

| Hop Engine | X            |
| ---------- | ------------ |
| Spark      | <sup>✓</sup> |
| Flink      | <sup>✓</sup> |
| Dataflow   | <sup>✓</sup> |

### Options

| Option                 | Description                                                             |
| ---------------------- | ----------------------------------------------------------------------- |
| Transform name         | Name of the transform, this name has to be unique in a single pipeline. |
| Output location        | The output location.                                                    |
| File prefix            | Text which has to precede the file name.                                |
| File suffix            | Text which has to succeed the file name.                                |
| Windowed writes?       | Writes a file per window. Use together with the Beam Window transform.  |
| File definition to use | The file definition to use stored in a metastore.                       |
| Edit                   | Edits an existing file definition.                                      |
| New                    | Creates a new file definition.                                          |
| Manage                 | Opens the MetaStore Explorer.                                           |

### File Definition

A file definition can be used to define a file structure definition.

| Option            | Description                          |
| ----------------- | ------------------------------------ |
| Name              | The file definition name.            |
| Description       | The file definition description.     |
| Field separator   | The character separating the fields. |
| Field enclosure   | The character enclosing fields.      |
| Field definitions | A list of fields.                    |
| Field name        | The field name.                      |
| Type              | The field data type.                 |
| Format            | The field format.                    |
| Length            | The field length.                    |
| Precision         | The field precision.                 |


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