| Package | Description | 
|---|---|
| org.apache.orc.mapred | 
 This package provides convenient access to ORC files using Hadoop's
 MapReduce InputFormat and OutputFormat. | 
| Class and Description | 
|---|
| OrcKey This type provides a wrapper for OrcStruct so that it can be sent through
 the MapReduce shuffle as a key. | 
| OrcList An ArrayList implementation that implements Writable. | 
| OrcMap A TreeMap implementation that implements Writable. | 
| OrcStruct | 
| OrcUnion An in-memory representation of a union type. | 
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