zc2003 opened a new issue, #24825:
URL: https://github.com/apache/shardingsphere/issues/24825
## Bug Report
### Which version of ShardingSphere did you use?
5.1.1 and 5.2.1
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-JDBC
### Expected behavior
query success
### Actual behavior
java.lang.NullPointerException: null
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.getValueCaseSensitiveFromTables(GroupByMemoryMergedResult.java:135)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.getValueCaseSensitive(GroupByMemoryMergedResult.java:125)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.init(GroupByMemoryMergedResult.java:73)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.init(GroupByMemoryMergedResult.java:53)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.infra.merge.result.impl.memory.MemoryMergedResult.<init>(MemoryMergedResult.java:52)
~[shardingsphere-infra-merge-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.groupby.GroupByMemoryMergedResult.<init>(GroupByMemoryMergedResult.java:56)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.getGroupByMergedResult(ShardingDQLResultMerger.java:118)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.build(ShardingDQLResultMerger.java:88)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.sharding.merge.dql.ShardingDQLResultMerger.merge(ShardingDQLResultMerger.java:66)
~[shardingsphere-sharding-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.infra.merge.MergeEngine.executeMerge(MergeEngine.java:82)
~[shardingsphere-infra-merge-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.infra.merge.MergeEngine.merge(MergeEngine.java:71)
~[shardingsphere-infra-merge-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.mergeQuery(ShardingSpherePreparedStatement.java:517)
~[shardingsphere-jdbc-core-5.2.1.jar:5.2.1]
at
org.apache.shardingsphere.driver.jdbc.core.statement.ShardingSpherePreparedStatement.getResultSet(ShardingSpherePreparedStatement.java:465)
~[shardingsphere-jdbc-core-5.2.1.jar:5.2.1]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:1.8.0_272]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:1.8.0_272]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_272]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_272]
at
org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:69)
~[mybatis-3.5.4.jar:3.5.4]
at com.sun.proxy.$Proxy90.getResultSet(Unknown Source) ~[?:?]
at
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getFirstResultSet(DefaultResultSetHandler.java:237)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:187)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)
~[mybatis-3.5.4.jar:3.5.4]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:76)
~[mybatis-3.5.4.jar:3.5.4]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:1.8.0_272]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:1.8.0_272]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_272]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_272]
at
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426)
~[mybatis-spring-2.0.4.jar:2.0.4]
at com.sun.proxy.$Proxy80.selectOne(Unknown Source) ~[?:?]
at
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159)
~[mybatis-spring-2.0.4.jar:2.0.4]
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87)
~[mybatis-3.5.4.jar:3.5.4]
at
org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:144)
~[mybatis-3.5.4.jar:3.5.4]
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85)
~[mybatis-3.5.4.jar:3.5.4]
at com.sun.proxy.$Proxy82.selectCount(Unknown Source) ~[?:?]
at com.shardingtest1.control.User1Control.count(User1Control.java:41)
~[classes/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:1.8.0_272]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:1.8.0_272]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_272]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_272]
at
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
~[spring-web-5.3.14.jar:5.3.14]
at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)
~[spring-web-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
~[spring-webmvc-5.3.14.jar:5.3.14]
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
~[spring-webmvc-5.3.14.jar:5.3.14]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
~[tomcat-embed-core-9.0.56.jar:4.0.FR]
at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
~[spring-webmvc-5.3.14.jar:5.3.14]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
~[tomcat-embed-core-9.0.56.jar:4.0.FR]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
~[tomcat-embed-websocket-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
~[spring-web-5.3.14.jar:5.3.14]
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
~[spring-web-5.3.14.jar:5.3.14]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
~[spring-web-5.3.14.jar:5.3.14]
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
~[spring-web-5.3.14.jar:5.3.14]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
~[spring-web-5.3.14.jar:5.3.14]
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
~[spring-web-5.3.14.jar:5.3.14]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
~[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:895)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1732)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
[tomcat-embed-core-9.0.56.jar:9.0.56]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_272]
### Reason analyze (If you can)
My Database is PG，get defaule schema is public，
The result of selectStatementContext.getTablesContext().getSchemaName() is
null
So get schema from database us default schema of public
The result of schema is empty
when merge result, cannot get table info from schema
cause null exception
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule
configuration, when exception occur etc.
spring:
shardingsphere:
enabled: true
schema:
name: mescenter_tddm
datasource:
names: ds0,ds1
ds0:
type: org.apache.commons.dbcp2.BasicDataSource
driver-class-name: org.postgresql.Driver
url:
jdbc:postgresql://**********:5432/tgmescenter_dlv00?targetServerType=master
username: ******
password: ******
ds1:
type: org.apache.commons.dbcp2.BasicDataSource
driver-class-name: org.postgresql.Driver
url:
jdbc:postgresql://**********:5432/tgmescenter_dlv00?targetServerType=master
username: ******
password: ******
props:
sql-show: true
sharding-route: true
rules:
sharding:
tables:
data_test:
actual-data-nodes: ds$->{0..1}.data_test
database-strategy:
standard:
sharding-column: userid
sharding-algorithm-name: sn_data_algorithm
sharding-algorithms:
sn_data_algorithm:
type: INLINE
props:
algorithm-expression: ds$->{userid % 2}
SQL：
<select id="selectCount" resultType="Integer">
select count(1) as cnt from data_test a
</select>
### Example codes for reproduce this issue (such as a github link).
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