bug fixed for "timeBetweenEvictionRunsMillis > keepAliveBetweenTimeMillis"

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

@@ -790,6 +790,10 @@ public abstract class DruidAbstractDataSource extends WrapperAdapter implements
             LOG.error("keepAliveBetweenTimeMillis should be greater than 30000");
         }
 
+        if (keepAliveBetweenTimeMillis <= timeBetweenEvictionRunsMillis) {
+            LOG.warn("keepAliveBetweenTimeMillis should be greater than timeBetweenEvictionRunsMillis");
+        }
+
         this.keepAliveBetweenTimeMillis = keepAliveBetweenTimeMillis;
     }
 

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

@@ -870,6 +870,10 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                 throw new SQLException("maxEvictableIdleTimeMillis must be grater than minEvictableIdleTimeMillis");
             }
 
+            if (keepAlive && keepAliveBetweenTimeMillis <= timeBetweenEvictionRunsMillis) {
+                throw new SQLException("keepAliveBetweenTimeMillis must be grater than timeBetweenEvictionRunsMillis");
+            }
+
             if (this.driverClass != null) {
                 this.driverClass = driverClass.trim();
             }
@@ -2864,7 +2868,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             for (;;) {
                 // 从前面开始删除
                 try {
-                    if (closed) {
+                    if (closed || closing) {
                         break;
                     }
 

src/main/java/com/alibaba/druid/pool/DruidDataSourceC3P0Adapter.java

@@ -165,7 +165,9 @@ public class DruidDataSourceC3P0Adapter implements DataSource, DruidDataSourceC3
     }
 
     public void setIdleConnectionTestPeriod(int idleConnectionTestPeriod) {
-        dataSource.setTimeBetweenEvictionRunsMillis(((long) idleConnectionTestPeriod) * 1000L);
+        long timeBetweenEvictionRunsMillis = ((long) idleConnectionTestPeriod) * 1000L;
+        dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
+        dataSource.setKeepAliveBetweenTimeMillis(timeBetweenEvictionRunsMillis * 2);
     }
 
     public int getInitialPoolSize() {

src/test/java/com/alibaba/druid/bvt/pool/KeepAliveTest.java

@@ -37,9 +37,12 @@ public class KeepAliveTest extends TestCase {
     public void test_keepAlive() throws Exception {
         dataSource.init();
 
-        for (int i = 0; i < 1000; ++i) {
-            if (dataSource.getMinIdle() == dataSource.getPoolingCount()) {
+        for (int i = 0; i < 100; ++i) {
+            int poolingCount = dataSource.getPoolingCount();
+            if (poolingCount >= dataSource.getMinIdle()) {
                 break;
+            } else {
+                System.out.println("poolingCount : " + poolingCount);
             }
             Thread.sleep(10 * 1);
         }
@@ -55,8 +58,5 @@ public class KeepAliveTest extends TestCase {
         }
         // assertEquals(dataSource.getMaxActive(), dataSource.getPoolingCount());
 
-
-
-        Thread.sleep(1000 * 1000);
     }
 }