longzhihun opened a new issue #3970: Got many warn message: com.mysql.jdbc.jdbc2.optional.MysqlXAException: Undetermined error occurred in the underlying Connection - check your data for consistency URL: https://github.com/apache/incubator-shardingsphere/issues/3970 I get many warn messages when i running sharding proxy standalone, message information: > com.mysql.jdbc.jdbc2.optional.MysqlXAException: Undetermined error occurred in the underlying Connection - check your data for consistency at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.mapXAExceptionFromSQLException(MysqlXAConnection.java:586) at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.recover(MysqlXAConnection.java:316) at com.mysql.jdbc.jdbc2.optional.SuspendableXAConnection.recover(SuspendableXAConnection.java:155) at com.atomikos.datasource.xa.RecoveryScan.recoverXids(RecoveryScan.java:32) at com.atomikos.recovery.xa.XaResourceRecoveryManager.retrievePreparedXidsFromXaResource(XaResourceRecoveryManager.java:158) at com.atomikos.recovery.xa.XaResourceRecoveryManager.recover(XaResourceRecoveryManager.java:67) at com.atomikos.datasource.xa.XATransactionalResource.recover(XATransactionalResource.java:449) at com.atomikos.icatch.imp.TransactionServiceImp.performRecovery(TransactionServiceImp.java:490) at com.atomikos.icatch.imp.TransactionServiceImp.access$000(TransactionServiceImp.java:56) at com.atomikos.icatch.imp.TransactionServiceImp$1.alarm(TransactionServiceImp.java:471) at com.atomikos.timing.PooledAlarmTimer.notifyListeners(PooledAlarmTimer.java:95) at com.atomikos.timing.PooledAlarmTimer.run(PooledAlarmTimer.java:82) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure at sun.reflect.GeneratedConstructorAccessor32.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3751) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2512) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2491) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2449) at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1381) at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.recover(MysqlXAConnection.java:295) ... 13 common frames omitted Caused by: java.net.SocketException: Broken pipe (Write failed) at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111) at java.net.SocketOutputStream.write(SocketOutputStream.java:155) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3733) ... 19 common frames omitted What're the meanings of the warning messages.
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