# Cassandra Input

## ![](/files/3SWOF8pHvSFniyR9YxKY) Cassandra Input

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

The Cassandra Input transform reads data from a Cassandra table of an Apache Cassandra cluster using CQL (Cassandra Query Language) version 3.x.

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

### Options

| Option                               | Description                                                                                                                                                                                     |
| ------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Cassandra connection                 | Here you specify the name of the connection to use either as a fixed value or as a variable expression. There are buttons to the right of the input field to hel you manage the metadata.       |
| Transport max length                 | Set an optional maximum object size that can be sent. Leaving it blank means that the default cluster value is used. (typically 16384000)                                                       |
| Execute query for each incoming row? | This will cause the query to be executed repeatedly: once per input row.                                                                                                                        |
| CQL                                  | The Cassandra Query Language statement you want to use. For more information on CQL, see [Introduction to Cassandra Query Language](https://docs.datastax.com/en/cql-oss/3.x/cql/cqlIntro.html) |


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