Error tips: unknown field

[shhdgit]

Bug Report

What did you do?

Open slowquery page in dashboard after cluster upgrade.

What did you expect to see?

See the slowquery data.

What did you see instead?

Error tips without correct data.

• error.api.other: unknown field sql
• error.api.other: unknown field Time

What version of TiDB Dashboard are you using (./tidb-dashboard --version)?

v4.0.9

[shhdgit]

This is caused by that old column name store in LocalStorage and can be temporarily solved by cleaning up browser's LocalStorage.

[breezewish]

As a tip, I think you can record it in our FAQ and make sure that there is no problem when upgrading to later versions.

[shhdgit]

Yeah, I was thinking whether it would be a good option to clean up user preferences after dashboard version change. Or just filter the data by schema.

[unbyte]

I believe we can make dashboard automatically handle such a version migration by maintaining version number of local storage schema.