线程内建立关闭druid连接

src/META-INF/MANIFEST.MF

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: cn.mesalab.main.BaselineApplication
+

src/main/java/cn/mesalab/dao/ReadHistoricalDruidData.java

@@ -39,6 +39,8 @@ public class ReadHistoricalDruidData implements Callable<ArrayList<Map<String, O
             resultData.addAll(DruidData.readFromDruid(sql, stat));
             long end = System.currentTimeMillis();
             LOG.info(sql + "\n读取" + resultData.size() + "条数据，运行时间：" + (end - start));
+            connection.close();
+            statement.close();
         } catch (Exception e) {
             e.printStackTrace();
         }

src/main/resources/application.properties

@@ -52,7 +52,7 @@ baseline.kalman.r=4
 # FOR TEST
 baseline.generate.batch.size=1000
 druid.read.batch.time.grad.hour=4
-thread.max.num=20
+thread.max.num=10
 
 
 # http client配置