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• There is no impact to existing users because this is a new Interface

Test Plan

Describe in few sentences how the KIP will be tested. We are mostly interested in system tests (since unit-tests are specific to implementation details). How will we know that the implementation works as expected? How will we know nothing broke?

Proposed 

Rejected Alternatives

Proposed new functionality should be tested with the functional test cases to ensure that results of stream-table foreign key join are consistent with results of the standard RDBMS SQL for foreign key left join between two database tables with foreign key relations. The database table that has foreign key field corresponds to the KTable that are on the right of the left join and database table that has a primary key matching foreign key corresponds to the KStream to the left of join.

Rejected Alternatives

NoneIf there are alternative ways of accomplishing the same thing, what were they? The purpose of this section is to motivate why the design is the way it is and not some other way.