| Name | Description | Type | Package | Framework |
| OrcFile | Contains factory methods to read or write ORC files. | Class | org.apache.hadoop.hive.ql.io.orc | Apache Hive |
| OrcFile .CompressionStrategy | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive | |
| OrcFile .EncodingStrategy | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive | |
| OrcFile .OrcTableProperties | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive | |
| OrcFile .ReaderOptions | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive | |
| OrcFile .Version | Create a version number for the ORC file format, so that we can add non-forward compatible changes in the future. | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive |
| OrcFile .WriterCallback | Interface | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive | |
| OrcFile .WriterOptions | Options for creating ORC file writers. | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive |
| OrcFile .WriterVersion | Records the version of the writer in terms of which bugs have been fixed. | Class | org.apache.hadoop.hive.ql.io.orc.OrcFile | Apache Hive |
| OrcFileKeyWrapper | Key for OrcFileMergeMapper task. | Class | org.apache.hadoop.hive.ql.io.orc | Apache Hive |
| OrcFileStripeMergeInputFormat | Class | org.apache.hadoop.hive.ql.io.orc | Apache Hive | |
| OrcFileStripeMergeRecordReader | Class | org.apache.hadoop.hive.ql.io.orc | Apache Hive | |
| OrcFileValueWrapper | Value for OrcFileMergeMapper. | Class | org.apache.hadoop.hive.ql.io.orc | Apache Hive |