n= 9163 

node), split, n, loss, yval, (yprob)
      * denotes terminal node

1) root 9163 3638 fail (0.6029685 0.3970315)  
  2) transaction_isolation=READ-COMMITTED,READ-UNCOMMITTED,SERIALIZABLE 5525    0 fail (1.0000000 0.0000000) *
  3) transaction_isolation=NULL,REPEATABLE-READ 3638    0 pass (0.0000000 1.0000000) *