# Package org.apache.cassandra.hadoop.cql3

- Class Summary
  Class | Description
  --- | ---
  CqlConfigHelper |
  CqlOutputFormat | The `ColumnFamilyOutputFormat` acts as a Hadoop-specific OutputFormat that allows reduce tasks to store keys (and corresponding binded variable values) as CQL rows (and respective columns) in a given ColumnFamily.
  CqlPagingInputFormat | Hadoop InputFormat allowing map/reduce against Cassandra rows within one ColumnFamily.
  CqlPagingRecordReader | Hadoop RecordReader read the values return from the CQL query It use CQL key range query to page through the wide rows.

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