10/20 nl hand at the commerce

[pt special]

my buddy was at the commerce and had an interesting hand at .....10/20nl 7k effective stacks
he limpes 66 2 people limp behind blinds complete
flop J86 all spades, he leads for 120 and the BB calls, turn 8 bb cks he bets 330 and gets ck raised to 2k total
river 2x and he shoves for 4500...comments one what u think BB has, and do you fold or call the river
also, this was his 4th hand at the table so it against a complete random