在所有生产线程退出的地方，都重新创建新的生产线程

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

@@ -2125,6 +2125,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 } catch (InterruptedException e) {
                     lastCreateError = e;
                     lastErrorTimeMillis = System.currentTimeMillis();
+                    DruidDataSource.this.createThreadChange();
                     break;
                 } finally {
                     lock.unlock();
@@ -2171,6 +2172,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 } catch (Error e) {
                     LOG.error("create connection error", e);
                     setFailContinuous(true);
+                    DruidDataSource.this.createThreadChange();
                     break;
                 }