Paolo,
Both tdbloader3 [1] and tdbloader4 [2] are (should be?) correct, I've been testing them with datasets in the 500-700 million triples range but I consider them (still) *experimental*.
Is now the right time to incorporate tdbloader3 into the main TDB codebase as "tdbloader3"?
It does not disturb anything else (does it?) and makes it more accessible to users to try out.
Or ... what does it take for it not to be "experimental"?
Andy
