The window worked on the cluster and settled on the wrong answer. After a
restart node05 registered in one second and the other four arrived
seventeen seconds later, because a disconnected agent reconnects on a
backoff that reaches thirty seconds. A five-second steady period called a
fleet of one settled and resumed placement while four nodes were still
coming — the exact situation the window exists to prevent, reached by being
impatient about it.
Nothing was misplaced this time only because the model that wanted placing
needed two nodes on a fabric and could not have it. With a single-node
model it would have landed on node05 and stayed there.
A minute now, and steady for half of it rather than a quarter. Adoption is
unaffected, so a restart still recovers everything already running
immediately; only new placement waits.
The test that covers it drives Reconcile the way the ticker does, because
the node count is noticed on a pass rather than the instant a node appears
— which the first version of the test got wrong and hid.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
