Jenyow commented on issue #13541:
URL:
https://github.com/apache/shardingsphere/issues/13541#issuecomment-966437545
Hi @strongduanmu. When I changed the version to 5.0.0-beta, it worked fine.
But when I change the version to 5.0.0, it always print the exception. So I'm
sure this is a bug in version 5.0.0.
use 5.0.0-beta the log:
```
==> Preparing: select count(id) from statistic_data
==> Parameters:
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Logic SQL: select
count(id)
from statistic_data
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --SQLStatement:
MySQLSelectStatement(limit=Optional.empty, lock=Optional.empty,
window=Optional.empty)
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A03
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A03
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:18:02] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A03
<== Columns: count(id)
<== Row: 0
<== Total: 1
```
use 5.0.0 the log:
```
==> Preparing: select count(id) from statistic_data
==> Parameters:
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Logic SQL: select
count(id)
from statistic_data
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --SQLStatement:
MySQLSelectStatement(limit=Optional.empty, lock=Optional.empty,
window=Optional.empty)
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2020 ::: select count(id)
from statistic_data_1820A03
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2021 ::: select count(id)
from statistic_data_1820A03
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A01
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A02
[2021-11-12 00:19:48] [INFO ] http-nio-8080-exec-1 --Actual SQL:
statistics2022 ::: select count(id)
from statistic_data_1820A03
Releasing transactional SqlSession
[org.apache.ibatis.session.defaults.DefaultSqlSession@5d6494b7]
Transaction synchronization deregistering SqlSession
[org.apache.ibatis.session.defaults.DefaultSqlSession@5d6494b7]
Transaction synchronization closing SqlSession
[org.apache.ibatis.session.defaults.DefaultSqlSession@5d6494b7]
[2021-11-12 00:19:48] [ERROR] http-nio-8080-exec-1 --Servlet.service() for
servlet [dispatcherServlet] in context with path [] threw exception [Request
processing failed; nested exception is
org.mybatis.spring.MyBatisSystemException: nested exception is
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.NullPointerException
### The error may exist in file
[E:\git\sharding-demo\target\classes\mapper\StatisticDataMapper.xml]
### The error may involve
org.example.mapper.StatisticDataMapper.countStatisticData
### The error occurred while handling results
### SQL: select count(id) from statistic_data
### Cause: java.lang.NullPointerException] with root cause
java.lang.NullPointerException: null
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.getValueCaseSensitiveFromTables(GroupByMemoryMergedResult.java:134)
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.getValueCaseSensitive(GroupByMemoryMergedResult.java:124)
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.init(GroupByMemoryMergedResult.java:73)
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.init(GroupByMemoryMergedResult.java:53)
at
org.apache.shardingsphere.infra.merge.result.impl.memory.MemoryMergedResult.<init>(MemoryMergedResult.java:51)
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.<init>(GroupByMemoryMergedResult.java:56)
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.getGroupByMergedResult(ShardingDQLResultMerger.java:108)
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.build(ShardingDQLResultMerger.java:78)
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.merge(ShardingDQLResultMerger.java:63)
at
org.apache.shardingsphere.infra.merge.MergeEngine.executeMerge(MergeEngine.java:90)
at
org.apache.shardingsphere.infra.merge.MergeEngine.merge(MergeEngine.java:80)
at
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.mergeQuery(ShardingSpherePreparedStatement.java:393)
at
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.getResultSet(ShardingSpherePreparedStatement.java:339)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:69)
at com.sun.proxy.$Proxy232.getResultSet(Unknown Source)
at
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getFirstResultSet(DefaultResultSetHandler.java:238)
at
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:188)
at
org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65)
at
org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:64)
at com.sun.proxy.$Proxy231.query(Unknown Source)
at
org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
at
org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
at
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
at
com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor.intercept(MybatisPlusInterceptor.java:81)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:62)
at com.sun.proxy.$Proxy230.query(Unknown Source)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:151)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:145)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:76)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)
at com.sun.proxy.$Proxy202.selectOne(Unknown Source)
at
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)
at
com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:89)
at
com.baomidou.mybatisplus.core.override.MybatisMapperProxy$PlainMethodInvoker.invoke(MybatisMapperProxy.java:148)
at
com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:89)
at com.sun.proxy.$Proxy203.countStatisticData(Unknown Source)
at
org.example.service.impl.StatisticDataServiceImpl.countStatisticDatas(StatisticDataServiceImpl.java:20)
at
org.example.service.impl.StatisticDataServiceImpl$$FastClassBySpringCGLIB$$283450a2.invoke(<generated>)
at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:367)
at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692)
at
org.example.service.impl.StatisticDataServiceImpl$$EnhancerBySpringCGLIB$$d3ce665.countStatisticDatas(<generated>)
at
org.example.controller.StatisticDataController.countStatisticDatas(StatisticDataController.java:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)
at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at
org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
```
Please check it again. Thanks.
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