fixed onFatalError emptySingle improve

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.alibaba</groupId>
 	<artifactId>druid</artifactId>
-	<version>1.1.20_preview_10</version>
+	<version>1.1.20_preview_11</version>
 
 	<packaging>jar</packaging>
 	<name>druid</name>
@@ -16,8 +16,8 @@
 		<junit.version>4.12</junit.version>
 		<jmh.version>1.19</jmh.version>
 
-		<gpg.skip>false</gpg.skip>
-		<javadoc.skip>false</javadoc.skip>
+		<gpg.skip>true</gpg.skip>
+		<javadoc.skip>true</javadoc.skip>
 
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<jdk.version>1.6</jdk.version>

src/main/java/com/alibaba/druid/pool/DruidDataSource.java

@@ -1754,8 +1754,10 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             }
 
             lastFatalErrorTimeMillis = lastErrorTimeMillis;
-            onFatalError = true;
             fatalErrorCount++;
+            if (fatalErrorCount - fatalErrorCountLastShrink > onFatalErrorMaxActive) {
+                onFatalError = true;
+            }
             lastFatalError = error;
             lastFatalErrorSql = sql;
         } finally {
@@ -2498,6 +2500,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                                 && (!(keepAlive && activeCount + poolingCount < minIdle)) // 在keepAlive场景不能放弃创建
                                 && (!initTask) // 线程池初始化时的任务不能放弃创建
                                 && !isFailContinuous() // failContinuous时不能放弃创建，否则会无法创建线程
+                                && !isOnFatalError() // onFatalError时不能放弃创建，否则会无法创建线程
                         ) {
                             clearCreateTask(taskId);
                             return;
@@ -2985,14 +2988,14 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
         boolean needFill = false;
         int evictCount = 0;
         int keepAliveCount = 0;
+        int fatalErrorIncrement = fatalErrorCount - fatalErrorCountLastShrink;
+        fatalErrorCountLastShrink = fatalErrorCount;
+        
         try {
             if (!inited) {
                 return;
             }
 
-            int fatalErrorIncrement = fatalErrorCount - fatalErrorCountLastShrink;
-            fatalErrorCountLastShrink = fatalErrorCount;
-
             final int checkCount = poolingCount - minIdle;
             final long currentTimeMillis = System.currentTimeMillis();
             for (int i = 0; i < poolingCount; ++i) {
@@ -3127,6 +3130,13 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             } finally {
                 lock.unlock();
             }
+        } else if (onFatalError || fatalErrorIncrement > 0) {
+            lock.lock();
+            try {
+                emptySignal();
+            } finally {
+                lock.unlock();
+            }
         }
     }