| Name | Type | Package | Detail |
| AbstractJoinTaskDispatcher | Abstract Class | optimizer.physical | Detail |
| CommonJoinTaskDispatcher | Class | optimizer.physical | Detail |
| CrossProductCheck | Class | optimizer.physical | Detail |
| DefaultRuleDispatcher | Class | ql.lib | Detail |
| IndexWhereTaskDispatcher | Class | physical.index | Detail |
| NullScanTaskDispatcher | Class | optimizer.physical | Detail |
| SortMergeJoinTaskDispatcher | Class | optimizer.physical | Detail |
| SparkCrossProductCheck | Class | optimizer.physical | Detail |
