472fe8952f88dca05fb94978ebe16049ac78d4b8
\345\246\202\344\275\225\345\256\232\344\275\215Druid\350\277\236\346\216\245\346\261\240\347\232\204\350\277\236\346\216\245\346\263\204\346\274\217\351\227\256\351\242\230\357\274\237.md
| ... | ... | @@ -0,0 +1,261 @@ |
| 1 | +# 如何定位 Druid & HikariCP 连接池的连接泄漏问题? |
|
| 2 | + |
|
| 3 | +## 1. Druid 中如何定位泄漏连接 |
|
| 4 | + |
|
| 5 | +在 Druid 连接池中,可以通过以下参数开启未归还连接的检测: |
|
| 6 | +removeAbandoned:是否回收超时未归还的连接,默认值为 false,表示不回收。 |
|
| 7 | +removeAbandonedTimeoutMillis:未归还连接的超时时间(单位:毫秒)。默认值为 300000(即 300 秒)。 |
|
| 8 | +logAbandoned:是否将超时未归还的连接信息打印到日志中。默认值为 false,表示不打印。 |
|
| 9 | + |
|
| 10 | +需要注意的是,logAbandoned 仅在 removeAbandoned 为 true 时生效。也就是说,Druid 连接池不支持仅打印,但不回收超时未归还连接的功能。 |
|
| 11 | + |
|
| 12 | +## 2. 实现细节 |
|
| 13 | +在DBCP 配置文件后面追加 |
|
| 14 | +``` |
|
| 15 | +removeAbandoned=true |
|
| 16 | +logAbandoned=true |
|
| 17 | +``` |
|
| 18 | + |
|
| 19 | +示例 |
|
| 20 | +在从连接池获取连接时,如果removeAbandoned为 true,则会记录连接的堆栈信息和创建时间,用于检测未归还连接。 |
|
| 21 | + |
|
| 22 | +```xml |
|
| 23 | +########DBCP########## |
|
| 24 | +driverClassName=com.mysql.cj.jdbc.Driver |
|
| 25 | +url=jdbc:mysql://192.168.xx.xx:3306/ |
|
| 26 | +initialSize=5 |
|
| 27 | +maxActive=250 |
|
| 28 | +keepAlive=true |
|
| 29 | +minIdle=5 |
|
| 30 | +filters=stat |
|
| 31 | +maxWait=6000 |
|
| 32 | +timeBetweenEvictionRunsMillis=60000 |
|
| 33 | +minEvictableIdleTimeMillis=300000 |
|
| 34 | +validationQuery=select 'x' |
|
| 35 | +testOnBorrow=true |
|
| 36 | +testOnReturn=false |
|
| 37 | +testWhileIdle=true |
|
| 38 | +poolPreparedStatements: true |
|
| 39 | +maxOpenPreparedStatements: 20 |
|
| 40 | +removeAbandoned=true |
|
| 41 | +logAbandoned=true |
|
| 42 | +``` |
|
| 43 | + |
|
| 44 | +## 3.查看日志 |
|
| 45 | +在日志中搜索关键字 abandon connection , 可以定位到是代码 `com.sie.iiot.apps.redis.utils.CommonUtils.getRbacTokenSuperuser(CommonUtils.java:33)` 这里创建了数据库链接,但是是在线程中 |
|
| 46 | +`com.sie.iiot.apps.taskscheduler.model.main.TaskScheduler`中执行的,因为线程一直在运行,导致链接不会释放 |
|
| 47 | + |
|
| 48 | +``` |
|
| 49 | +2025-07-21 14:10:41.694 |
|
| 50 | +2025-07-21 14:10:41.624 [Druid-ConnectionPool-Destroy-540642172] ERROR com.alibaba.druid.pool.DruidDataSource -abandon connection, owner thread: iiot_thread_general-0, connected at : 1753077917085, open stackTrace |
|
| 51 | +2025-07-21 14:10:41.694 |
|
| 52 | + at java.lang.Thread.getStackTrace(Thread.java:1559) |
|
| 53 | +2025-07-21 14:10:41.694 |
|
| 54 | + at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1498) |
|
| 55 | +2025-07-21 14:10:41.694 |
|
| 56 | + at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5059) |
|
| 57 | +2025-07-21 14:10:41.694 |
|
| 58 | + at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:726) |
|
| 59 | +2025-07-21 14:10:41.694 |
|
| 60 | + at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5055) |
|
| 61 | +2025-07-21 14:10:41.694 |
|
| 62 | + at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1407) |
|
| 63 | +2025-07-21 14:10:41.694 |
|
| 64 | + at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1399) |
|
| 65 | +2025-07-21 14:10:41.694 |
|
| 66 | + at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:100) |
|
| 67 | +2025-07-21 14:10:41.694 |
|
| 68 | + at com.sie.snest.engine.db.relationdb.RelationDBAccessor.<init>(RelationDBAccessor.java:216) |
|
| 69 | +2025-07-21 14:10:41.694 |
|
| 70 | + at com.sie.snest.engine.a.a.getNewAccessorFromDataSource(AbstractDataSourceStrategy.java:123) |
|
| 71 | +2025-07-21 14:10:41.695 |
|
| 72 | + at com.sie.snest.engine.a.a.getDbAccessor(AbstractDataSourceStrategy.java:106) |
|
| 73 | +2025-07-21 14:10:41.695 |
|
| 74 | + at com.sie.snest.engine.a.h.getRelationDBAccessor(ModelMetaDataSourceStrategy.java:39) |
|
| 75 | +2025-07-21 14:10:41.695 |
|
| 76 | + at com.sie.snest.engine.a.h.getRelationDBAccessor(ModelMetaDataSourceStrategy.java:32) |
|
| 77 | +2025-07-21 14:10:41.695 |
|
| 78 | + at com.sie.snest.engine.data.access.BussModelDataAccess.getRelationDBAccessor(BussModelDataAccess.java:166) |
|
| 79 | +2025-07-21 14:10:41.695 |
|
| 80 | + at com.sie.snest.engine.db.relationdb.FilterExpression.<init>(FilterExpression.java:439) |
|
| 81 | +2025-07-21 14:10:41.695 |
|
| 82 | + at com.sie.snest.engine.data.access.BussModelDataAccess.a(BussModelDataAccess.java:2417) |
|
| 83 | +2025-07-21 14:10:41.695 |
|
| 84 | + at com.sie.snest.engine.data.access.BussModelDataAccess.search(BussModelDataAccess.java:571) |
|
| 85 | +2025-07-21 14:10:41.695 |
|
| 86 | + at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source) |
|
| 87 | +2025-07-21 14:10:41.695 |
|
| 88 | + at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
|
| 89 | +2025-07-21 14:10:41.695 |
|
| 90 | + at java.lang.reflect.Method.invoke(Method.java:498) |
|
| 91 | +2025-07-21 14:10:41.695 |
|
| 92 | + at com.sie.snest.engine.model.MethodMeta.execute(MethodMeta.java:274) |
|
| 93 | +2025-07-21 14:10:41.695 |
|
| 94 | + at com.sie.snest.engine.model.MethodMeta.invoke(MethodMeta.java:197) |
|
| 95 | +2025-07-21 14:10:41.695 |
|
| 96 | + at com.sie.snest.engine.api.distributed.RpcInvocationV2.invoke(RpcInvocationV2.java:168) |
|
| 97 | +2025-07-21 14:10:41.695 |
|
| 98 | + at com.sie.snest.engine.data.RecordSet.call(RecordSet.java:361) |
|
| 99 | +2025-07-21 14:10:41.695 |
|
| 100 | + at com.sie.snest.engine.data.RecordSet.search(RecordSet.java:185) |
|
| 101 | +2025-07-21 14:10:41.695 |
|
| 102 | + at com.sie.iiot.apps.redis.utils.CommonUtils.getRbacTokenSuperuser(CommonUtils.java:33) |
|
| 103 | +2025-07-21 14:10:41.695 |
|
| 104 | + at com.sie.iiot.apps.redis.utils.CommonUtils.setToken(CommonUtils.java:29) |
|
| 105 | +2025-07-21 14:10:41.695 |
|
| 106 | + at com.sie.iiot.apps.redis.model.RedisUtils.<init>(RedisUtils.java:61) |
|
| 107 | +2025-07-21 14:10:41.695 |
|
| 108 | + at com.sie.iiot.apps.redis.model.RedisUtils$$EnhancerByCGLIB$$6461d573.<init>(<generated>) |
|
| 109 | +2025-07-21 14:10:41.695 |
|
| 110 | + at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) |
|
| 111 | +2025-07-21 14:10:41.695 |
|
| 112 | + at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) |
|
| 113 | +2025-07-21 14:10:41.695 |
|
| 114 | + at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) |
|
| 115 | +2025-07-21 14:10:41.695 |
|
| 116 | + at java.lang.reflect.Constructor.newInstance(Constructor.java:423) |
|
| 117 | +2025-07-21 14:10:41.695 |
|
| 118 | + at net.sf.cglib.core.ReflectUtils.newInstance(ReflectUtils.java:291) |
|
| 119 | +2025-07-21 14:10:41.695 |
|
| 120 | + at net.sf.cglib.proxy.Enhancer$EnhancerFactoryData.newInstance(Enhancer.java:448) |
|
| 121 | +2025-07-21 14:10:41.695 |
|
| 122 | + at net.sf.cglib.proxy.Enhancer.nextInstance(Enhancer.java:700) |
|
| 123 | +2025-07-21 14:10:41.695 |
|
| 124 | + at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:298) |
|
| 125 | +2025-07-21 14:10:41.695 |
|
| 126 | + at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:480) |
|
| 127 | +2025-07-21 14:10:41.695 |
|
| 128 | + at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:305) |
|
| 129 | +2025-07-21 14:10:41.695 |
|
| 130 | + at com.sie.snest.engine.model.MethodMeta.getInstance(MethodMeta.java:402) |
|
| 131 | +2025-07-21 14:10:41.695 |
|
| 132 | + at com.sie.snest.engine.model.MethodMeta.invoke(MethodMeta.java:202) |
|
| 133 | +2025-07-21 14:10:41.695 |
|
| 134 | + at com.sie.snest.engine.api.distributed.RpcInvocationV2.invoke(RpcInvocationV2.java:168) |
|
| 135 | +2025-07-21 14:10:41.695 |
|
| 136 | + at com.sie.snest.engine.data.RecordSet.call(RecordSet.java:361) |
|
| 137 | +2025-07-21 14:10:41.695 |
|
| 138 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment.init(BaseDeployment.java:29) |
|
| 139 | +2025-07-21 14:10:41.695 |
|
| 140 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18.CGLIB$init$5(<generated>) |
|
| 141 | +2025-07-21 14:10:41.695 |
|
| 142 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18$$FastClassByCGLIB$$fb1ca8f7.invoke(<generated>) |
|
| 143 | +2025-07-21 14:10:41.695 |
|
| 144 | + at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) |
|
| 145 | +2025-07-21 14:10:41.695 |
|
| 146 | + at com.sie.snest.engine.model.ModelInterceptor.intercept(ModelInterceptor.java:84) |
|
| 147 | +2025-07-21 14:10:41.695 |
|
| 148 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18.init(<generated>) |
|
| 149 | +2025-07-21 14:10:41.695 |
|
| 150 | + at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) |
|
| 151 | +2025-07-21 14:10:41.695 |
|
| 152 | + at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) |
|
| 153 | +2025-07-21 14:10:41.695 |
|
| 154 | + at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
|
| 155 | +2025-07-21 14:10:41.695 |
|
| 156 | + at java.lang.reflect.Method.invoke(Method.java:498) |
|
| 157 | +2025-07-21 14:10:41.695 |
|
| 158 | + at com.sie.snest.engine.model.MethodMeta.execute(MethodMeta.java:274) |
|
| 159 | +2025-07-21 14:10:41.695 |
|
| 160 | + at com.sie.snest.engine.model.MethodMeta.invoke(MethodMeta.java:204) |
|
| 161 | +2025-07-21 14:10:41.695 |
|
| 162 | + at com.sie.snest.engine.api.distributed.RpcInvocationV2.invoke(RpcInvocationV2.java:168) |
|
| 163 | +2025-07-21 14:10:41.695 |
|
| 164 | + at com.sie.snest.engine.data.RecordSet.call(RecordSet.java:361) |
|
| 165 | +2025-07-21 14:10:41.695 |
|
| 166 | + at com.sie.iiot.apps.taskscheduler.model.main.TaskScheduler.executeRealTimeTask(TaskScheduler.java:775) |
|
| 167 | +2025-07-21 14:10:41.695 |
|
| 168 | + at com.sie.iiot.apps.taskscheduler.model.main.TaskScheduler.lambda$realTimeTaskBase$0(TaskScheduler.java:95) |
|
| 169 | +2025-07-21 14:10:41.695 |
|
| 170 | + at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) |
|
| 171 | +2025-07-21 14:10:41.695 |
|
| 172 | + at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) |
|
| 173 | +2025-07-21 14:10:41.695 |
|
| 174 | + at java.lang.Thread.run(Thread.java:748) |
|
| 175 | +2025-07-21 14:10:41.695 |
|
| 176 | +ownerThread current state is RUNNABLE, current stackTrace |
|
| 177 | +2025-07-21 14:10:41.695 |
|
| 178 | + at java.net.SocketInputStream.socketRead0(Native Method) |
|
| 179 | +2025-07-21 14:10:41.695 |
|
| 180 | + at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) |
|
| 181 | +2025-07-21 14:10:41.695 |
|
| 182 | + at java.net.SocketInputStream.read(SocketInputStream.java:171) |
|
| 183 | +2025-07-21 14:10:41.695 |
|
| 184 | + at java.net.SocketInputStream.read(SocketInputStream.java:141) |
|
| 185 | +2025-07-21 14:10:41.695 |
|
| 186 | + at java.net.SocketInputStream.read(SocketInputStream.java:127) |
|
| 187 | +2025-07-21 14:10:41.695 |
|
| 188 | + at redis.clients.jedis.util.RedisInputStream.ensureFill(RedisInputStream.java:202) |
|
| 189 | +2025-07-21 14:10:41.695 |
|
| 190 | + at redis.clients.jedis.util.RedisInputStream.readByte(RedisInputStream.java:46) |
|
| 191 | +2025-07-21 14:10:41.695 |
|
| 192 | + at redis.clients.jedis.Protocol.process(Protocol.java:126) |
|
| 193 | +2025-07-21 14:10:41.695 |
|
| 194 | + at redis.clients.jedis.Protocol.read(Protocol.java:192) |
|
| 195 | +2025-07-21 14:10:41.695 |
|
| 196 | + at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:316) |
|
| 197 | +2025-07-21 14:10:41.695 |
|
| 198 | + at redis.clients.jedis.Connection.getUnflushedObjectMultiBulkReply(Connection.java:282) |
|
| 199 | +2025-07-21 14:10:41.695 |
|
| 200 | + at redis.clients.jedis.JedisPubSub.process(JedisPubSub.java:135) |
|
| 201 | +2025-07-21 14:10:41.696 |
|
| 202 | + at redis.clients.jedis.JedisPubSub.proceed(JedisPubSub.java:125) |
|
| 203 | +2025-07-21 14:10:41.696 |
|
| 204 | + at redis.clients.jedis.Jedis.subscribe(Jedis.java:7908) |
|
| 205 | +2025-07-21 14:10:41.696 |
|
| 206 | + at com.sie.iiot.apps.redis.model.RedisUtils.subscribe(RedisUtils.java:2397) |
|
| 207 | +2025-07-21 14:10:41.696 |
|
| 208 | + at com.sie.iiot.apps.redis.model.RedisUtils$$EnhancerByCGLIB$$6461d573.CGLIB$subscribe$72(<generated>) |
|
| 209 | +2025-07-21 14:10:41.696 |
|
| 210 | + at com.sie.iiot.apps.redis.model.RedisUtils$$EnhancerByCGLIB$$6461d573$$FastClassByCGLIB$$4ad4bcdf.invoke(<generated>) |
|
| 211 | +2025-07-21 14:10:41.696 |
|
| 212 | + at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) |
|
| 213 | +2025-07-21 14:10:41.696 |
|
| 214 | + at com.sie.snest.engine.model.ModelInterceptor.intercept(ModelInterceptor.java:84) |
|
| 215 | +2025-07-21 14:10:41.696 |
|
| 216 | + at com.sie.iiot.apps.redis.model.RedisUtils$$EnhancerByCGLIB$$6461d573.subscribe(<generated>) |
|
| 217 | +2025-07-21 14:10:41.696 |
|
| 218 | + at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) |
|
| 219 | +2025-07-21 14:10:41.696 |
|
| 220 | + at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) |
|
| 221 | +2025-07-21 14:10:41.696 |
|
| 222 | + at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
|
| 223 | +2025-07-21 14:10:41.696 |
|
| 224 | + at java.lang.reflect.Method.invoke(Method.java:498) |
|
| 225 | +2025-07-21 14:10:41.696 |
|
| 226 | + at com.sie.snest.engine.model.MethodMeta.execute(MethodMeta.java:274) |
|
| 227 | +2025-07-21 14:10:41.696 |
|
| 228 | + at com.sie.snest.engine.model.MethodMeta.invoke(MethodMeta.java:204) |
|
| 229 | +2025-07-21 14:10:41.696 |
|
| 230 | + at com.sie.snest.engine.api.distributed.RpcInvocationV2.invoke(RpcInvocationV2.java:168) |
|
| 231 | +2025-07-21 14:10:41.696 |
|
| 232 | + at com.sie.snest.engine.data.RecordSet.call(RecordSet.java:361) |
|
| 233 | + |
|
| 234 | +2025-07-21 14:10:41.696 |
|
| 235 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment.init(BaseDeployment.java:29) |
|
| 236 | +2025-07-21 14:10:41.696 |
|
| 237 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18.CGLIB$init$5(<generated>) |
|
| 238 | +2025-07-21 14:10:41.696 |
|
| 239 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18$$FastClassByCGLIB$$fb1ca8f7.invoke(<generated>) |
|
| 240 | +2025-07-21 14:10:41.696 |
|
| 241 | + at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) |
|
| 242 | +2025-07-21 14:10:41.696 |
|
| 243 | + at com.sie.snest.engine.model.ModelInterceptor.intercept(ModelInterceptor.java:84) |
|
| 244 | +2025-07-21 14:10:41.696 |
|
| 245 | + at com.sie.iiot.apps.base.model.deployment.BaseDeployment$$EnhancerByCGLIB$$7b8e4b18.init(<generated>) |
|
| 246 | +2025-07-21 14:10:41.696 |
|
| 247 | + at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) |
|
| 248 | +2025-07-21 14:10:41.696 |
|
| 249 | + at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) |
|
| 250 | +2025-07-21 14:10:41.696 |
|
| 251 | + at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
|
| 252 | + |
|
| 253 | +``` |
|
| 254 | + |
|
| 255 | + |
|
| 256 | +## 4. 解决方式 |
|
| 257 | +如果是在线程中执行了SQL操作,那么需要业务代码自己手动的去创建meta和显示的调用 meta.close() |
|
| 258 | + |
|
| 259 | +请参考: [03.meta上下文使用规范](http://192.168.175.198:10001/iidpwiki/01.%E5%BC%80%E5%8F%91%E6%89%8B%E5%86%8C/06.%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98QA/03.meta%E4%B8%8A%E4%B8%8B%E6%96%87%E4%BD%BF%E7%94%A8%E8%A7%84%E8%8C%83.md) |
|
| 260 | + |
|
| 261 | + |