"dumping" icon doesn't show immediately while datasource is being checked

[sirloon]

Before downloading new remote files, Hub checks local vs. remote. This part is blocking and doesn't use any process or thread. So 1st) the dump command doesn't show in the process list but most importanty 2nd) the dump icon doesn't show on the datasource grid, either because the state in mongo isn't properly changed, or, the state has changed but the blocking behavior prevents to hub from propagating the info on the webapp