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