what is java.io.EOFException, Message: Can not read response from server. Expected to read 4 bytes, read 0 bytes

Question

This question has been asked a couple of times in SO and many times in other sites. But I didn\'t get any satisfiable answer.

My problem:
I have a java web app

Answer 1

i meet the same problem, it caused by lock for too much time.

we have a long transcation A, if execute it, the other trascation will be locked util transcation A finished, so the others always be killed by our mysql tool(pt-kill)