Offloaded nodes does not fit into MySQL TEXT field

[paveq]

What happened:

Used nodes offloading feature. When offloading started, I immediately received error:
msg="Updated message -> Error 1406: Data too long for column 'nodes' at row 1"

This seems to be due to TEXT field being limited to 64 kilobytes. Instead of TEXT, we should use at least MEDIUMTEXT which allows to store 16 megabytes of data.

What you expected to happen:

Offloading works.

How to reproduce it (as minimally and precisely as possible):

I think it might depend on your workflow, but in general this should happen when large nodes are offloaded into mysql database.

Anything else we need to know?:

Environment:

• Argo version: v2.5.0-rc12
• Kubernetes version : v1.13.12-gke.25