# Package org.apache.avro.hadoop.io

- Class Summary
  Class | Description
  --- | ---
  AvroDatumConverter<INPUT,OUTPUT> | Converts a Java object into an Avro datum.
  AvroDatumConverterFactory | Constructs converters that turn objects (usually from the output of a MR job) into Avro data that can be serialized.
  AvroDatumConverterFactory.AvroWrapperConverter | Converts AvroWrappers into their wrapped Avro data.
  AvroDatumConverterFactory.BooleanWritableConverter | Converts BooleanWritables into Booleans.
  AvroDatumConverterFactory.BytesWritableConverter | Converts BytesWritables into ByteBuffers.
  AvroDatumConverterFactory.ByteWritableConverter | Converts ByteWritables into GenericFixed of size 1.
  AvroDatumConverterFactory.DoubleWritableConverter | Converts DoubleWritables into Doubles.
  AvroDatumConverterFactory.FloatWritableConverter | Converts FloatWritables into Floats.
  AvroDatumConverterFactory.IntWritableConverter | Converts IntWritables into Ints.
  AvroDatumConverterFactory.LongWritableConverter | Converts LongWritables into Longs.
  AvroDatumConverterFactory.NullWritableConverter | Converts NullWritables into Nulls.
  AvroDatumConverterFactory.TextConverter | Converts Text into CharSequences.
  AvroDeserializer<T extends AvroWrapper<D>,D> | Deserializes AvroWrapper objects within Hadoop.
  AvroKeyComparator<T> | The `RawComparator` used by jobs configured with `AvroJob`.
  AvroKeyDeserializer<D> | Deserializes AvroKey objects within Hadoop.
  AvroKeyValue<K,V> | A helper object for working with the Avro generic records that are used to store key/value pairs in an Avro container file.
  AvroKeyValue.Iterator<K,V> | A wrapper for iterators over GenericRecords that are known to be KeyValue records.
  AvroSequenceFile | A wrapper around a Hadoop `SequenceFile` that also supports reading and writing Avro data.
  AvroSequenceFile.Reader | A reader for SequenceFiles that may contain Avro data.
  AvroSequenceFile.Reader.Options | A helper class to encapsulate the options that can be used to construct a Reader.
  AvroSequenceFile.Writer | A writer for an uncompressed SequenceFile that supports Avro data.
  AvroSequenceFile.Writer.Options | A helper class to encapsulate the options that can be used to construct a Writer.
  AvroSerialization<T> | The `Serialization` used by jobs configured with `AvroJob`.
  AvroSerializer<T> | Serializes AvroWrapper objects within Hadoop.
  AvroValueDeserializer<D> | Deserializes AvroValue objects within Hadoop.

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