org.springframework.data.cassandra.CassandraUncategorizedException

Question

我在 spring 引导程序中使用休眠来调用 Cassandra 3.11 中的方法 findByIdField(UUID id) 到 return 列表，下面的错误出现在控制台日志中。

我有一个 entity、repository 和 service 使用这个简单的方法。我传递一个 UUID 作为参数，我检查数据库中的 ID 并且它存在。

控制器：

Optional<List<Fields>> fieldList = fieldService.findByIdField(UUID.fromString(id));

服务：

public Optional<List<Fields>> findByIdField(UUID id) throws SQLException {
    return repository.findByIdField(id);
}

存储库：

@AllowFiltering
Optional<List<Fields>> findByIdField(UUID id);

错误：

org.springframework.data.cassandra.CassandraUncategorizedException: nested exception is java.lang.NullPointerException

at org.springframework.data.cassandra.core.cql.CassandraExceptionTranslator.translate(CassandraExceptionTranslator.java:160) ~[spring-data-cassandra-3.1.3.jar:3.1.3]
at org.springframework.data.cassandra.core.cql.CassandraExceptionTranslator.translateExceptionIfPossible(CassandraExceptionTranslator.java:72) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.config.CqlSessionFactoryBean.translateExceptionIfPossible(CqlSessionFactoryBean.java:646) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) ~[spring-tx-5.3.3.jar:5.3.3] at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) ~[spring-tx-5.3.3.jar:5.3.3] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152) ~[spring-tx-5.3.3.jar:5.3.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.3.jar:5.3.3] at com.sun.proxy.$Proxy117.findByIdSensor(Unknown Source) ~[na:na] at br.com.genesis.service.operacao.GerarStatusSinalSasMcsScmPiService.findByIdSensor(GerarStatusSinalSasMcsScmPiService.java:44) ~[classes/:2.4.2] at br.com.genesis.controller.operacao.OpeStatusComponeteController.mostraHistoricoFalha(OpeStatusComponeteController.java:941) ~[classes/:2.4.2] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_152] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_152] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_152] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_152] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.3.jar:5.3.3] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.3.jar:5.3.3] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.3.jar:5.3.3] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.3.jar:5.3.3] at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[servlet-api.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.3.jar:5.3.3] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[servlet-api.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-websocket.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.3.jar:5.3.3] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.3.3.jar:5.3.3] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.3.jar:5.3.3] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.3.3.jar:5.3.3] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126) [spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.support.ErrorPageFilter.access[=15=]0(ErrorPageFilter.java:64) [spring-boot-2.4.2.jar:2.4.2] at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilterInternal(ErrorPageFilter.java:101) [spring-boot-2.4.2.jar:2.4.2] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.3.3.jar:5.3.3] at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119) [spring-boot-2.4.2.jar:2.4.2] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.3.3.jar:5.3.3] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.3.3.jar:5.3.3] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.41] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.41] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [catalina.jar:9.0.41] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) [catalina.jar:9.0.41] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) [catalina.jar:9.0.41] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) [catalina.jar:9.0.41] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.41] at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) [catalina.jar:9.0.41] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) [catalina.jar:9.0.41] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.41] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) [tomcat-coyote.jar:9.0.41] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-coyote.jar:9.0.41] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) [tomcat-coyote.jar:9.0.41] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597) [tomcat-coyote.jar:9.0.41] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.41] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_152] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_152] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.41] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_152] Caused by: java.lang.NullPointerException: null at sun.invoke.util.ValueConversions.unboxLong(ValueConversions.java:121) ~[na:1.8.0_152] at br.com.genesis.model.entity.operacao.GerarStatusSinalSasMcsScmPi_Accessor_7l4hif.setProperty(Unknown Source) ~[classes/:2.4.2] at org.springframework.data.mapping.model.InstantiationAwarePropertyAccessor.setProperty(InstantiationAwarePropertyAccessor.java:104) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.data.mapping.model.ConvertingPropertyAccessor.setProperty(ConvertingPropertyAccessor.java:63) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.readProperty(MappingCassandraConverter.java:413) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.readProperties(MappingCassandraConverter.java:400) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.doReadEntity(MappingCassandraConverter.java:389) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.doReadEntity(MappingCassandraConverter.java:365) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.readEntityFromRow(MappingCassandraConverter.java:345) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.readRow(MappingCassandraConverter.java:341) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.convert.MappingCassandraConverter.read(MappingCassandraConverter.java:298) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.CassandraTemplate.lambda$getMapper(CassandraTemplate.java:910) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.CassandraTemplate.lambda$select[=15=](CassandraTemplate.java:337) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.cql.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:83) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.cql.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:43) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.cql.CqlTemplate.query(CqlTemplate.java:298) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.cql.CqlTemplate.query(CqlTemplate.java:320) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.core.CassandraTemplate.select(CassandraTemplate.java:337) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.repository.query.CassandraQueryExecution$CollectionExecution.execute(CassandraQueryExecution.java:136) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.repository.query.CassandraQueryExecution$ResultProcessingExecution.execute(CassandraQueryExecution.java:262) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.cassandra.repository.query.AbstractCassandraQuery.execute(AbstractCassandraQuery.java:105) ~[spring-data-cassandra-3.1.3.jar:3.1.3] at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:152) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:131) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80) ~[spring-data-commons-2.4.3.jar:2.4.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.3.jar:5.3.3] at com.sun.proxy.$Proxy117.findByIdSensor(Unknown Source) ~[na:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_152] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_152] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_152] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_152] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.3.jar:5.3.3] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.3.jar:5.3.3] ... 63 common frames omitted

Answer 1

虽然错误消息指示 NPE（空指针异常），但我认为这掩盖了这里的根本问题。但是，删除 ALLOW FILTERING:

时显示的错误消息

Cannot execute this query as it might involve
data filtering and thus may have unpredictable
performance. If you want to execute this query
despite the performance unpredictability, use
ALLOW FILTERING;

...更具启发性。

这告诉我底层 table 不是由 UUID 键入的。这意味着 Cassandra 必须（彻底地）扫描每个节点上的所有分区以构建结果集。它可能在 cqlsh 中有效，因为查询超时阈值设置高于 Spring。

至于如何解决这个问题，我建议创建一个新的 table 来支持这个查询，并使用基于该 UUID 的分区键。这将防止每个节点成为查询的一部分。

如果无法做到这一点，您可以尝试在该列上添加二级索引。二级索引通常在几乎唯一的基数下表现不佳（这就是为什么构建一个新的 table 确实是最好的选择），但它可能比使用 ALLOW FILTERING 指令表现更好。