| Name | Type | Package | Detail |
| | | |
| AHSClient | Class | client.api | Detail |
| AMRMClient | Class | client.api | Detail |
| AMRMClientAsync | Class | api.async | Detail |
| AddingCompositeService | Class | server.services | Detail |
| AvroFSInput | Class | hadoop.fs | Detail |
| ChainMapper | Class | mapred.lib | Detail |
| ChainReducer | Class | mapred.lib | Detail |
| ChecksumFileSystem | Class | hadoop.fs | Detail |
| CombineFileRecordReaderWrapper | Class | lib.input | Detail |
| ComposableRecordReader | Class | lib.join | Detail |
| CompressionInputStream | Class | io.compress | Detail |
| CompressionOutputStream | Class | io.compress | Detail |
| DataDrivenDBRecordReader | Class | lib.db | Detail |
| DataOutputOutputStream | Class | hadoop.io | Detail |
| DefaultStringifier | Class | hadoop.io | Detail |
| FSDataInputStream | Class | hadoop.fs | Detail |
| FSDataOutputStream | Class | hadoop.fs | Detail |
| FTPFileSystem | Class | fs.ftp | Detail |
| FieldSelectionMapReduce | Class | mapred.lib | Detail |
| FileSink | Class | metrics2.sink | Detail |
| GraphiteSink | Class | metrics2.sink | Detail |
| IdentityMapper | Class | mapred.lib | Detail |
| IdentityReducer | Class | mapred.lib | Detail |
| InnerJoinRecordReader | Class | lib.join | Detail |
| InverseMapper | Class | mapred.lib | Detail |
| JoinRecordReader | Class | lib.join | Detail |
| KeyValueLineRecordReader | Class | lib.input | Detail |
| LocalFileSystem | Class | hadoop.fs | Detail |
| LongSumReducer | Class | mapred.lib | Detail |
| MapReduceBase | Class | hadoop.mapred | Detail |
| NMClient | Class | client.api | Detail |
| NMClientAsync | Class | api.async | Detail |
| NativeS3FileSystem | Class | fs.s3native | Detail |
| OracleDBRecordReader | Class | lib.db | Detail |
| OracleDataDrivenDBRecordReader | Class | lib.db | Detail |
| OuterJoinRecordReader | Class | lib.join | Detail |
| OverrideRecordReader | Class | lib.join | Detail |
| RecordReader | Class | hadoop.mapreduce | Detail |
| RegexMapper | Class | mapred.lib | Detail |
| RegistryOperationsClient | Class | client.impl | Detail |
| RegistryOperationsService | Class | impl.zk | Detail |
| S3FileSystem | Class | fs.s3 | Detail |
| SequenceFileAsTextRecordReader | Class | lib.input | Detail |
| SequenceFileRecordReader | Class | lib.input | Detail |
| SplitCompressionInputStream | Class | io.compress | Detail |
| TimelineClient | Class | client.api | Detail |
| TokenCountMapper | Class | mapred.lib | Detail |
| ValueAggregatorCombiner | Class | lib.aggregate | Detail |
| ValueAggregatorJobBase | Class | lib.aggregate | Detail |
| ValueAggregatorMapper | Class | lib.aggregate | Detail |
| ValueAggregatorReducer | Class | lib.aggregate | Detail |
| ViewFileSystem | Class | fs.viewfs | Detail |
| WrappedRecordReader | Class | lib.join | Detail |
| YarnClient | Class | client.api | Detail |
