[FLINK-21457] Add support to differentiate a zero length value bytes and non existing value.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: statefun-3.0.0
• Component/s: Stateful Functions
• Assignee: Igal Shilman
• Reporter: Igal Shilman
• Created: 23/Feb/21 09:57
• Updated: 27/Apr/21 18:03
• Resolved: 25/Feb/21 02:28

Description

The TypedValue Protobuf message has a value bytes field, but since Protobuf doesn't differentiate between a non existing value and a default value (in this case a byte array of size 0) we need to add an additional boolean flag, to indicate rather or not a value was set.