Hand test K8. Expanding JSONBAgg to three layers ran for minutes: the
server re-executes a query for every continuation page and returns only
about 30 rows of scope columns per page under its default output
budget, so one layer became more than 500 sequential calls.
The scope loader now asks for pages of up to 5000 rows. Layer three of
JSONBAgg finishes in about 8 s with 11 calls. While a layer loads, the
toolbar names it with the nodes and edges loaded so far, the canvas
says the picture is a partial preview, and the minus button cancels
the load and returns at once to the previous, complete layer. A layer
that grows past the render limits stops there, is marked partial with
the limit in its tooltip and is never the base of a further layer.
The Expand tooltip states the frontier and the growth of the last
layer, without promising a count.
Signed-off-by: Bernhard Jackiewicz <bj@techport.io>
Bernhard Jackiewicz
a436eacf43