中断废弃的线程

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

@@ -609,7 +609,9 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
         createConnectionThread.setStarted(false);
         String destroyName = "Druid-ConnectionPool-Destroy-" + System.identityHashCode(this) + this.getUrl();
         if (destroyConnectionThread != null) {
-            destroyConnectionThread.interrupt();
+            if (!destroyConnectionThread.isInterrupted()) {
+                destroyConnectionThread.interrupt();
+            }
         }
         destroyConnectionThread = new DestroyConnectionThread(destroyName);
         destroyConnectionThread.setStarted(false);