fix RTDmpFetch

src/main/java/mobvista/dmp/util/MySQLUtil.java

 package mobvista.dmp.util;
 
 import mobvista.dmp.datasource.rtdmp.entity.KV;
+import org.apache.commons.lang3.StringUtils;
 
 import java.sql.*;
 import java.text.SimpleDateFormat;
@@ -81,15 +82,14 @@ public class MySQLUtil {
             sql = "SELECT part,utime FROM dmp.table_info WHERE db_name = '" + dbName + "' AND tb_name = '" + tbName + "' AND flag = 1 ORDER BY part DESC LIMIT 1";
             System.out.println("getPartitionTime,SQL --->>> " + sql);
             ResultSet rs = stmt.executeQuery(sql);
-
-            if (!rs.next()) {
-                System.out.println("getPartitionTime Null,SQL --->>> " + sql);
-            }
             while (rs.next()) {
                 partition = rs.getString("part");
                 utime = rs.getTimestamp("utime");
                 System.out.println("partition:" + partition + ",utime:" + utime);
             }
+            if (StringUtils.isNotBlank(partition)) {
+                System.out.println("getPartitionTime Null,SQL --->>> " + sql);
+            }
             System.out.println("getPartitionTime,SQL --->>> " + sql);
             rs.close();
             stmt.close();