change

src/connector/jdbc/src/test/java/com/taosdata/jdbc/BaseTest.java

@@ -5,7 +5,7 @@ import com.taosdata.jdbc.utils.TDNodes;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
-public class BaseTest {
+public abstract class BaseTest {
 
     private static boolean testCluster = false;
     private static TDNodes nodes = new TDNodes();

src/connector/jdbc/src/test/java/com/taosdata/jdbc/cases/FailOverTest.java

@@ -1,7 +1,5 @@
 package com.taosdata.jdbc.cases;
 
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 import java.sql.*;