[PROTOCOL RFC] Type Widening Table Feature

[johanl-db]

Protocol Change Request

Description of the protocol change

This protocol change is part of the proposed Type Widening table feature, see feature request: #2622

Design doc: https://docs.google.com/document/d/1KIqf6o6JMD7e8aMrGlUROSwTfzYeW4NCIZVAUMW_-Tc

The type widening table feature covers changing the type of existing columns or nested fields in a Delta table without having to rewrite the data.

Willingness to contribute

The Delta Lake Community encourages protocol innovations. Would you or another member of your organization be willing to contribute this feature to the Delta Lake code base?

• Yes. I can contribute.
• Yes. I would be willing to contribute with guidance from the Delta Lake community.
• No. I cannot contribute at this time.