Why does Drummle almost come to blows with Startop at Jaggers’ house? Why do you think Jaggers says that he likes Drummle, nevertheless?

One evening, Pip, Drummel, and Startop are invited to dinner at Mr. Jaggers' home. During a conversation about rowing, Drummle becomes angry asserting that his skill is better than anyone. This creates a fight. I think Jaggers likes Drummle's spirit.