Comment 3 for bug 720853

After some investigation it seems that the source of the recursion problem is that while indexing, a node is being serialized to a length > PAGE_SIZE. There is currently no assertion check for that, so it recurses infinitely trying to expand the tree to fit it, in vain.

With the size assertion added, the operation stops pretty quickly (30s or so, rather than stopping at 18m at the max recursion depth). Currently trying to see why the node is so large in this case.