# Cassandra SSTable Output
##  Cassandra SSTable Output
### Description
The Cassandra SSTable Output transform writes to a file system directory as a Cassandra SSTable.
| Hop Engine | ✓ |
| ---------- | ------------ |
| Spark | ? |
| Flink | ? |
| Dataflow | ? |
| Option | Description |
| --------------------------------- | ------------------------------------------------------------ |
| Transform name | the name to use for this transform |
| Cassandra yaml file | The cassandra.yaml configuration file to use |
| Directory | the directory to output to |
| Keyspace | the keyspace (database) to use |
| Table | the table to write to |
| Incoming fields to use as the key | The field in the incoming data to use as the key for inserts |
| Buffer (MB) | Size (MB) of write buffer |
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