BI-29723 druid连接池生产线程阻塞

fine-druid/src/com/fr/third/alibaba/druid/pool/DruidDataSource.java

@@ -2229,7 +2229,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                     }
                 }
                 try {
-                    Thread.sleep(timeBetweenConnectErrorMillis);
+                    Thread.sleep(30000);
                 } catch (InterruptedException ignore) {
                     break;
                 }