# Parquet File Input

## <img src="/files/bvoJ7sRAzUrhW9hHxqk1" alt="" data-size="line"> Parquet File Input

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

The Parquet File Input transform reads (primitive) values from an Apache Parquet file.

For more information on this see: [Apache Parquet](http://parquet.apache.org/).

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

### Options

Notes:

* To support reading from any location through Apache VFS each file is loaded into memory (one at a time). Make sure to allocate enough memory to allow this.
* Long values can be de-serialized to Dates if they are EPOC: milliseconds since `1970-01-01 00:00:00.000`
* Parquet Binary fields are considered to be Hop Strings but you can read them as Hop Binary.
* All input values are passed to the output
* INT96 is converted to the Hop Binary data type.

| Option            | Description                                                                                                                      |
| ----------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| Transform name    | Name of the transform this name has to be unique in a single pipeline.                                                           |
| Filename field    | Specify the input field. Use a transform like Get File Names to obtain file names. Any supported file location is fine.          |
| Fields            | In this table you can specify all the fields you want to obtain from the parquet files as well as their desired Hop output type. |
| Get fields button | With this button you can select a parquet file from which we’ll read the schema to populate the Fields grid.                     |


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