| Name | Description | Type | Package | Framework |
| MuxOperator | MuxOperator is used in the Reduce side of MapReduce jobs optimized by Correlation Optimizer. | Class | org.apache.hadoop.hive.ql.exec | Apache Hive |
| MuxOperator .Handler | Handler is used to construct the key-value structure. | Class | org.apache.hadoop.hive.ql.exec.MuxOperator | Apache Hive |