private AtomicLong fetchRowCout = new AtomicLong();
Connection globalConnection = null;
protected void setUp() throws Exception {
JdbcStatManager stat = JdbcStatManager.getInstance();
stat.reset();
Class.forName("com.alibaba.druid.proxy.DruidDriver");
Connection conn = DriverManager.getConnection(url);
int size = stat.getConnectionList().size();
Assert.assertTrue(size >= 1);
conn.close();
TabularData connectionList = stat.getConnectionList();
Assert.assertEquals(connectionList.size(), size - 1);
stat.reset();
globalConnection = DriverManager.getConnection(url);
}