# Package org.apache.cassandra.hadoop

- Class Summary
  Class | Description
  --- | ---
  AbstractBulkOutputFormat<K,V> |
  AbstractBulkOutputFormat.NullOutputCommitter |
  AbstractBulkRecordWriter<K,V> |
  AbstractBulkRecordWriter.ExternalClient |
  AbstractBulkRecordWriter.NullOutputHandler |
  AbstractColumnFamilyInputFormat<K,Y> |
  AbstractColumnFamilyOutputFormat<K,Y> | The `ColumnFamilyOutputFormat` acts as a Hadoop-specific OutputFormat that allows reduce tasks to store keys (and corresponding values) as Cassandra rows (and respective columns) in a given ColumnFamily.
  AbstractColumnFamilyRecordWriter<K,Y> | The `ColumnFamilyRecordWriter` maps the output <key, value> pairs to a Cassandra column family.
  BulkOutputFormat |
  BulkRecordWriter |
  ColumnFamilyInputFormat | Hadoop InputFormat allowing map/reduce against Cassandra rows within one ColumnFamily.
  ColumnFamilyOutputFormat | The `ColumnFamilyOutputFormat` acts as a Hadoop-specific OutputFormat that allows reduce tasks to store keys (and corresponding values) as Cassandra rows (and respective columns) in a given ColumnFamily.
  ColumnFamilyRecordReader |
  ColumnFamilySplit |
  ConfigHelper |
  HadoopCompat | Utility methods to allow applications to deal with inconsistencies between MapReduce Context Objects API between Hadoop 1.x and 2.x.
  ReporterWrapper | A reporter that works with both mapred and mapreduce APIs.

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