Cannot load data into quads database using mongodb


I’m using cayley as with mongodb as backend, but I found that each time I load data by quad files(**.nq), I could load all(several hundreds) the nodes, but only about ten quads, which means that I could only search bout ten records using <s,p> pairs
Here is the command:
cayley load --config=cayley.cfg.overview --quads=data/demo.nq --alsologtostderr=true --dbpath=…/mongodb/data/cayleydb
Thanks very much!


Somtimes it could feed dozens of records, sometimes zero,how can i solve the problem?