| 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  RawComparatorused by jobs configured withAvroJob. | 
| 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  SequenceFilethat
 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  Serializationused by jobs configured withAvroJob. | 
| AvroSerializer<T> | Serializes AvroWrapper objects within Hadoop. | 
| AvroValueDeserializer<D> | Deserializes AvroValue objects within Hadoop. | 
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