> ## Documentation Index
> Fetch the complete documentation index at: https://docs.risingwave.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sink data from RisingWave to WebHDFS

> This guide describes how to sink data from RisingWave to WebHDFS.

As a workaround for HDFS, WebHDFS allows external clients to execute Hadoop file system operations without necessarily running on the Hadoop cluster itself. Therefore, it reduces the dependency on the Hadoop environment when using HDFS.

## Syntax

```sql theme={null}
CREATE SINK [ IF NOT EXISTS ] sink_name
[FROM sink_from | AS select_query]
WITH (
   connector='webhdfs',
   connector_parameter = 'value', ...
);
```

## Parameters

| Parameter names  | Description                                                                               |
| ---------------- | ----------------------------------------------------------------------------------------- |
| connector        | **Required**. Support the WebHDFS connector only.                                         |
| webhdfs.endpoint | **Required**. The endpoint for the WebHDFS service.                                       |
| webhdfs.path     | **Required**. The directory where the sink file is located.                               |
| type             | **Required**. Defines the type of the sink. The WebHDFS sink only supports `append-only`. |

## Example

```sql theme={null}
CREATE SINK webhdfs_sink AS SELECT v1
FROM t1
WITH (
    connector='webhdfs',
    webhdfs.path = '<test_path>',
    webhdfs.endpoint = '<test_endpoint>',
    type = 'append-only',
)FORMAT PLAIN ENCODE PARQUET(force_append_only=true);
```

## Advanced topics

For more information about encode `Parquet` or `JSON`, see [Sink data in parquet or json format](/delivery/overview#sink-data-in-parquet-or-json-format).

For more information about batching strategy, see [Batching strategy for file sink](/delivery/overview#batching-strategy-for-file-sink).