子事务提交报错:java.sql.SQLException: io.seata.core.exception.TransactionException

在示例中，扣减仓库（当仓库不存在数据时）数量时报错：
2019-06-13 16:13:25.576 INFO 13872 --- [atch_RMROLE_4_8] io.seata.core.rpc.netty.RmRpcClient : RmRpcClient sendResponse xid=192.168.136.1:8091:2014124048,branchId=2014124049,branchStatus=PhaseTwo_Rollbacked,result code =Success,getMsg =null
org.springframework.jdbc.UncategorizedSQLException:
### Error committing transaction. Cause: java.sql.SQLException: io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]
### Cause: java.sql.SQLException: io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]
; uncategorized SQLException; SQL state [null]; error code [0]; io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]; nested exception is java.sql.SQLException: io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:89)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy79.update(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:294)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy80.decreaseStorage(Unknown Source)
at io.seata.samples.integration.storage.service.TStorageServiceImpl.decreaseStorage(TStorageServiceImpl.java:26)
at io.seata.samples.integration.storage.service.TStorageServiceImpl$$FastClassBySpringCGLIB$$29699009.invoke()
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684)
at io.seata.samples.integration.storage.service.TStorageServiceImpl$$EnhancerBySpringCGLIB$$ae971c20.decreaseStorage()
at io.seata.samples.integration.storage.dubbo.StorageDubboServiceImpl.decreaseStorage(StorageDubboServiceImpl.java:28)
at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java)
at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:76)
at com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:52)
at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
at io.seata.integration.dubbo.alibaba.TransactionPropagationFilter.invoke(TransactionPropagationFilter.java:61)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:62)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:73)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:138)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38)
at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:104)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:96)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:173)
at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.sql.SQLException: io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]
at io.seata.rm.datasource.ConnectionProxy.recognizeLockKeyConflictException(ConnectionProxy.java:130)
at io.seata.rm.datasource.ConnectionProxy.processGlobalTransactionCommit(ConnectionProxy.java:179)
at io.seata.rm.datasource.ConnectionProxy.commit(ConnectionProxy.java:156)
at org.apache.ibatis.transaction.jdbc.JdbcTransaction.commit(JdbcTransaction.java:72)
at org.apache.ibatis.executor.BaseExecutor.commit(BaseExecutor.java:244)
at org.apache.ibatis.executor.CachingExecutor.commit(CachingExecutor.java:119)
at org.apache.ibatis.session.defaults.DefaultSqlSession.commit(DefaultSqlSession.java:224)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:437)
... 42 more
Caused by: io.seata.core.exception.TransactionException: Response[TransactionException[192.168.136.1:8091:2014124048]]
at io.seata.rm.AbstractResourceManager.branchRegister(AbstractResourceManager.java:68)
at io.seata.rm.DefaultResourceManager.branchRegister(DefaultResourceManager.java:96)
at io.seata.rm.datasource.ConnectionProxy.register(ConnectionProxy.java:198)
at io.seata.rm.datasource.ConnectionProxy.processGlobalTransactionCommit(ConnectionProxy.java:177)
... 48 more
2019-06-13 16:13:26.972 WARN 13872 --- [20882-thread-21] c.a.dubbo.rpc.filter.TimeoutFilter : [DUBBO] invoke time out. method: decreaseStorage arguments: [CommodityDTO(id=null, commodityCode=P190510529590122, name=null, count=2)] , url is dubbo://192.168.136.1:20882/io.seata.samples.integration.common.dubbo.StorageDubboService?anyhost=true&application=dubbo-storage-example&bean.name=ServiceBean:io.seata.samples.integration.common.dubbo.StorageDubboService:1.0.0&bind.ip=192.168.136.1&bind.port=20882&dubbo=2.0.2&generic=false&interface=io.seata.samples.integration.common.dubbo.StorageDubboService&methods=decreaseStorage&pid=13872&qos.enable=false&revision=1.0.0&side=provider&timeout=3000×tamp=1560405720554&version=1.0.0, invoke elapsed 4436 ms., dubbo version: 2.6.5, current host: 192.168.136.1
2019-06-13 16:13:27.999 WARN 13872 --- [20882-thread-20] c.a.dubbo.rpc.filter.TimeoutFilter : [DUBBO] invoke time out. method: decreaseStorage arguments: [CommodityDTO(id=null, commodityCode=P190510529590122, name=null, count=2)] , url is dubbo://192.168.136.1:20882/io.seata.samples.integration.common.dubbo.StorageDubboService?anyhost=true&application=dubbo-storage-example&bean.name=ServiceBean:io.seata.samples.integration.common.dubbo.StorageDubboService:1.0.0&bind.ip=192.168.136.1&bind.port=20882&dubbo=2.0.2&generic=false&interface=io.seata.samples.integration.common.dubbo.StorageDubboService&methods=decreaseStorage&pid=13872&qos.enable=false&revision=1.0.0&side=provider&timeout=3000×tamp=1560405720554&version=1.0.0, invoke elapsed 8458 ms., dubbo version: 2.6.5, current host: 192.168.136.1

Reproduce the missing-warehouse case using the storage service entry points in TStorageServiceImpl.java:26 and StorageDubboServiceImpl.java:28. Then trace the commit path through ConnectionProxy.processGlobalTransactionCommit and branchRegister, as shown in the stack trace. Done means the scenario no longer produces the reported transaction exception and Dubbo timeouts.

Written by the indexing model from the issue text.