Poker Stars $6.00+$0.25 No Limit Hold'em Tournament - t10/t20 Blinds - 2 players
BB: t1730 (M = 57.67)
Hero (BTN/SB): t1270 (M = 42.33)
Pre Flop: (t30) Hero is BTN/SB with Jh2s:
Hero raises to t60, BB calls t40
Flop: (t120) 5h4h3h:
BB checks, Hero bets t80, BB calls t80
Turn: (t280) 6d
BB bets t340, Hero raises to t1130 all in, BB calls t790
He should only be doing this with bluffs and 7X or possibly 2X. If you shove over his raise you will force him to fold his bluffs but he will still call you with equal or better hands. I think you are better off flat calling and letting him bluff the river.
Edit: I think it is viable for him to have a flush draw too, but I still think calling is better, especially while in position.