The checkpoint the runtime saved after the node and before it handed any of
this step's expansion requests to the handler. The node's edges are decided
after the expansion, on the graph it leaves, so the checkpoint does not list
the node in visitedNodes, and a resume from it routes the node once by its
edges. A write, external or human node keeps its result and what it
wrote, and a resume marks it complete with its recorded output; a pure or
read node is saved as it was before it ran, and a resume runs it again.
After a parallel batch, whose nodes' edges are decided before the expansion,
the checkpoint lists every node of the batch.
The checkpoint the runtime saved after the node and before it handed any of this step's expansion requests to the handler. The node's edges are decided after the expansion, on the graph it leaves, so the checkpoint does not list the node in
visitedNodes, and a resume from it routes the node once by its edges. Awrite,externalorhumannode keeps its result and what it wrote, and a resume marks it complete with its recorded output; apureorreadnode is saved as it was before it ran, and a resume runs it again. After a parallel batch, whose nodes' edges are decided before the expansion, the checkpoint lists every node of the batch.