arthurdaley - 12:07 am on Oct 3, 2004 (gmt 0)
I dont think its handling lookups that is the main problem when adding more than 4.2 billion pages to the index. The biggest bottleneck would be calculating pagerank. At the moment using the 32 bit system they can store each page id as a straightforward integer. Adding a workaround to handle more than the 32 bit limit would drastically impair the speed to calculate PR.