Implement the serial version of join operator. **Reporter**: [Areg Melik-Adamyan](https://issues.apache.org/jira/browse/ARROW-4630) / @aregm **Assignee**: [Areg Melik-Adamyan](https://issues.apache.org/jira/browse/ARROW-4630) / @aregm #### Related issues: - [To join two arrow tables](https://github.com/apache/arrow/issues/23075) (is duplicated by) - [[C++][Compute] Implement many-to-many inner hash join](https://github.com/apache/arrow/issues/29280) (is superceded by) <sub>**Note**: *This issue was originally created as [ARROW-4630](https://issues.apache.org/jira/browse/ARROW-4630). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*</sub>
Implement the serial version of join operator.
Reporter: Areg Melik-Adamyan / @aregm
Assignee: Areg Melik-Adamyan / @aregm
Related issues:
Note: This issue was originally created as ARROW-4630. Please see the migration documentation for further details.