Running searches against a very big workspace using info.magnolia.periscope.search.jcr.JcrSearchResultSupplier might take a considerable amount of time. Especially during the initial search after logging in to Admin Central. E.g. as soon as you log in, a search is run against the website workspace without a query term.

As long as the search is running Vaadin UIDL requests are constantly sent to Magnolia.
Depending on network latency, these requests may take some time to complete. E.g. 100 - 200 ms.
This may results in Admin Central UI becoming very sluggish and sometimes impossible to navigate as long as the search is running.

Problem statement

The polling could be endless with very long searches over large repositories.

Solution

Replace polls with a push.

Together with MGNLUI-6398 this should solve MGNLPER-135