This is a user experience improvement in sqllab. Historically, if the user was disconnected from the internet or the backed was down, sqllab continues to poll from the backend. All the while showing the user they are in the pending state. This PR makes it refresh the when the ajax request cannot connect to the backend so the page errors out with the right `ERR_CONNECTION_REFUSED` error to avoid confusion .
@graceguo-supercat @kristw [ Full content available at: https://github.com/apache/incubator-superset/pull/6013 ] This message was relayed via gitbox.apache.org for [email protected]
