不明白river allin是想干什么

我在turn考虑了一会才只是call，这就是他river shove的 原因？
Poker Stars $0.50/$1 Pot Limit Omaha Hi - 6 players - View hand 2742970
DeucesCracked Poker Videos Hand History Converter

CO: $234.85
Hero (BTN): $186.72
SB: $38.09
BB: $100.00
UTG: $115.70
MP: $188.75

Pre Flop: ($1.50) Hero is BTN with 5 8 4 9
1 fold, MP raises to $3, 1 fold, Hero calls $3, 1 fold, BB calls $2

Flop: ($9.50) 7 5 8 (3 players)
BB bets $9.07, MP folds, Hero calls $9.07

Turn: ($27.64) 5 (2 players)
BB bets $26.40, Hero calls $26.40

River: ($80.44) 9 (2 players)
BB bets $61.53 all in, Hero calls $61.53

Final Pot: $203.50
Hero shows 5 8 4 9 (a full house, Fives full of Nines)
BB shows 2 6 9 T (a straight, Six to Ten)
Hero wins $200.70
(Rake: $2.80)