after gpcc version change, login to gpcc webpage report error: Error: Updates stalled: [422: error ]

Products

• VMware Tanzu Greenplum

Issue/Introduction

Sometimes, after gpcc version change, either upgrade or downgrade, when login to gpcc webpage , it will report error:

Error: Updates stalled: [422: error ]

Cause

Basically this 422 error is a http protocol error. There are many reason for this result. Here is the reason is the previous gpcc data is still in the browser cache. Then with the old cache, login to a different version of gpcc, it will not work.

422 Unprocessable Content

The HyperText Transfer Protocol (HTTP) 422 Unprocessable Content response status code indicates that the server understands the content type of the request entity, and the syntax of the request entity is correct, but it was unable to process the contained instructions. 

To check further, we can open the "inspect" function of each browser, then retry the webpage login, it will show you more details.

Resolution

clear the browser cache, then all gpcc webpage function back to normal.