Fixes #229 suppress debug log at shutdown

hikaricp-common/src/main/java/com/zaxxer/hikari/pool/BaseHikariPool.java

@@ -262,7 +262,7 @@ public abstract class BaseHikariPool implements HikariPoolMBean, IBagStateListen
          connectionBag.close();
          softEvictConnections();
          houseKeepingExecutorService.shutdown();
-         addConnectionExecutor.shutdown();
+         addConnectionExecutor.shutdownNow();
          houseKeepingExecutorService.awaitTermination(5L, TimeUnit.SECONDS);
          addConnectionExecutor.awaitTermination(5L, TimeUnit.SECONDS);
 
@@ -456,11 +456,13 @@ public abstract class BaseHikariPool implements HikariPoolMBean, IBagStateListen
          }
          catch (Exception e) {
             lastConnectionFailure.set(e);
+            if (poolState == POOL_RUNNING) {
+               LOGGER.debug("Connection attempt to database {} failed: {}", configuration.getPoolName(), e.getMessage(), e);
+            }
             poolUtils.quietlyCloseConnection(connection);
-            LOGGER.debug("Connection attempt to database {} failed: {}", configuration.getPoolName(), e.getMessage(), e);
          }
       }
-   
+
       totalConnections.decrementAndGet(); // We failed or pool is max, so undo speculative increment of totalConnections
       return false;
    }

hikaricp-common/src/test/java/com/zaxxer/hikari/ShutdownTest.java

@@ -238,6 +238,28 @@ public class ShutdownTest
        }
    }
 
+   @Test
+   public void testShutdownDuringInit() throws Exception
+   {
+      final HikariConfig config = new HikariConfig();
+      config.setMinimumIdle(5);
+      config.setMaximumPoolSize(5);
+      config.setConnectionTimeout(1000);
+      config.setValidationTimeout(1000);
+      config.setInitializationFailFast(true);
+      config.setConnectionTestQuery("VALUES 1");
+      config.setDataSourceClassName("com.zaxxer.hikari.mocks.StubDataSource");
+
+      HikariDataSource ds = new HikariDataSource(config);
+      try {
+         StubConnection.slowCreate = true;
+         UtilityElf.quietlySleep(3000L);
+      }
+      finally {
+         ds.close();
+      }
+   }
+
    @Test
    public void testThreadedShutdown() throws Exception
    {
@@ -245,6 +267,7 @@ public class ShutdownTest
       config.setMinimumIdle(5);
       config.setMaximumPoolSize(5);
       config.setConnectionTimeout(1000);
+      config.setValidationTimeout(1000);
       config.setInitializationFailFast(true);
       config.setConnectionTestQuery("VALUES 1");
       config.setDataSourceClassName("com.zaxxer.hikari.mocks.StubDataSource");