127.0.0.1$ mysql -V
mysql  Ver 14.14 Distrib 8.0.0-dmr, for Linux (x86_64) using  EditLine wrapper

JDBC::error: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long

192.168.43.48$ mysql -V
mysql Ver 14.14 Distrib 5.5.53, for debian-linux-gnu (x86_64) using readline 6.3

JDBCDrivers["MySQL(Connector/J)"]

JDBCDriver["Name" -> "MySQL(Connector/J)",
"Driver" -> "com.mysql.jdbc.Driver", "Protocol" -> "jdbc:mysql://",
 "Version" -> 3.,
 "Description" ->
  "MySQL using Connector/J - Version 5.1.27 - This supports all known
MySQL server versions.",
 "Location" ->
  "/usr/local/Wolfram/Mathematica/10.0/SystemFiles/Links/DatabaseLink/
DatabaseResources/mysql.m"]

127.0.0.1$ java -version
openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-04-14-195246.buildd.src)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-04-14-195246.buildd.src, mixed mode)