Issue in transformation job. Unable to find [JOIN_KEY] field in a reference stream.

[KirtiMistry]

This issue occurred due to not specifying the [JOIN_KEY] in a Select statement.
Transformation generated from Architect doesn't include a join key in a Select statement.

[vinodgopu]

Present : in select statement joining key (i.e. std_id) is not included / specified even though in merge step joining key has populated, In pentaho Joining key has to exists in both tables.

[vinodgopu]

Expected :

[vinodgopu]

If we don't have joining key from the input reference stream before joining step Pentaho through error at runtime for example :

[vinodgopu]

Tested in new build, working as expected