当我从5.0升级到5.1时，我确实收到了此错误。
这与https://jira.codehaus.org/browse/SONAR-4778有关。 有关详细信息，请参阅http://sonarqube.15.x6.nabble.com/WARN-web-o-s-s-n-NotificationService-Unable-to-deliver-notification-td5035238.html。
正如西蒙·布兰德霍夫所说，这是一个错误，它应该用https://jira.codehaus.org/browse/SONAR-6566修复在5.1.1中。
现在我升级到5.1.1并且我仍然遇到同样的问题。
2015.06.09 09:52:48 WARN web[o.s.s.n.NotificationService] Unable to deliver notification Notification{type='issue-changes', fields={new.resolution=FIXED, old.status=OPEN, projectKey=xxxxxx, new.status=CLOSED, ruleName=Public types, methods and fields (API) should be documented with Javadoc, reporter=null, assignee=xxxxxx, message=Document this public constructor., old.reso
lution=null, projectName=xxxxxxxx, componentKey=null, key=d7571ab9-ac49-41c9-9973-35d4a1ee83cf}} for user xxxxx via EmailNotificationChannel
javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: could not execute query
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614) ~[hibernate-entitymanager-3.4.0.GA.jar:3.4.0.GA]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:76) ~[hibernate-entitymanager-3.4.0.GA.jar:3.4.0.GA]
at org.sonar.jpa.session.JpaDatabaseSession.getSingleResult(JpaDatabaseSession.java:207) ~[sonar-core-5.1.1.jar:na]
at org.sonar.jpa.session.JpaDatabaseSession.getSingleResult(JpaDatabaseSession.java:238) ~[sonar-core-5.1.1.jar:na]
at org.sonar.core.user.HibernateUserFinder.findByLogin(HibernateUserFinder.java:47) ~[sonar-core-5.1.1.jar:na]
at org.sonar.plugins.emailnotifications.EmailNotificationChannel.deliver(EmailNotificationChannel.java:98) ~[na:na]
at org.sonar.server.notifications.NotificationService.dispatch(NotificationService.java:200) [sonar-server-5.1.1.jar:na]
at org.sonar.server.notifications.NotificationService.deliver(NotificationService.java:190) [sonar-server-5.1.1.jar:na]
at org.sonar.server.computation.step.SendIssueNotificationsStep.doExecute(SendIssueNotificationsStep.java:83) [sonar-server-5.1.1.jar:na]
at org.sonar.server.computation.step.SendIssueNotificationsStep.execute(SendIssueNotificationsStep.java:66) [sonar-server-5.1.1.jar:na]
at org.sonar.server.computation.ComputationService.process(ComputationService.java:89) [sonar-server-5.1.1.jar:na]
at org.sonar.server.computation.ComputationContainer.execute(ComputationContainer.java:47) [sonar-server-5.1.1.jar:na]
at org.sonar.server.computation.ComputationThread.run(ComputationThread.java:58) [sonar-server-5.1.1.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_45]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_45]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_45]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_45]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
Caused by: org.hibernate.exception.JDBCConnectionException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.doList(Loader.java:2235) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.list(Loader.java:2124) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67) ~[hibernate-entitymanager-3.4.0.GA.jar:3.4.0.GA]
... 18 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[na:1.8.0_45]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:377) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.Util.getInstance(Util.java:360) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:935) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:924) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:870) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1232) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1225) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4104) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4073) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:281) ~[commons-dbcp-1.4.jar:1.4]
at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:313) ~[commons-dbcp-1.4.jar:1.4]
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:452) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.doQuery(Loader.java:696) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.doList(Loader.java:2232) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
... 26 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 264Â 434Â 682 milliseconds ago. The last packet sent successfully to
ur application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.ction validity before use in yo at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[na:1.8.0_45]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:377) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1036) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3661) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2417) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2530) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1907) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2030) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1907) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2030) ~[mysql-connector-java-5.1.34.jar:5.1.34]
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96) ~[commons-dbcp-1.4.jar:1.4]
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96) ~[commons-dbcp-1.4.jar:1.4]
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.getResultSet(Loader.java:1812) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.loader.Loader.doQuery(Loader.java:697) ~[hibernate-core-3.3.2.GA.jar:3.3.2.GA]
... 28 common frames omitted
Caused by: java.net.SocketException: Relais brisé (pipe)
at java.net.SocketOutputStream.socketWrite0(Native Method) ~[na:1.8.0_45]
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) ~[na:1.8.0_45]
at java.net.SocketOutputStream.write(SocketOutputStream.java:153) ~[na:1.8.0_45]
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) ~[na:1.8.0_45]
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) ~[na:1.8.0_45]
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3643) ~[mysql-connector-java-5.1.34.jar:5.1.34]
... 38 common frames omitted
我无法访问Jira，因此我无法在错误中添加评论。 能帮帮我吧。
以下是系统信息页面中的数据库配置：
Database
Database MySQL
Database Version 5.5.37-log
Username sonarqube@xxxxxxxxxxx
URL jdbc:mysql://xxxxxxxxxx/sonarqube?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance
Driver MySQL Connector Java
Driver Version mysql-connector-java-5.1.34 ( Revision: jess.balint@oracle.com-20141014163213-wqbwpf1ok2kvo1om )
Version Status UP_TO_DATE
Pool Active Connections 2
Pool Max Connections 50
Pool Initial Size 0
Pool Idle Connections 3
Pool Min Idle Connections 2
Pool Max Idle Connections 5
Pool Max Wait (ms) 5000
Pool Remove Abandoned false
Pool Remove Abandoned Timeout (seconds) 300