我正在使用Mondrian OLAP FOR Analytics，我们一直在使用Mysql，但已决定迁移到Apache钻取。
现在我已经配置了Apache Drill，我能够通过SQuirreL Client等外部客户端连接到Apache，但是当我尝试通过Saiku连接它时，我在Catalina.out中获得了以下的堆栈跟踪
INFO: Deploying web application directory saiku
name:Lists
driver:mondrian.olap4j.MondrianOlap4jDriver
url:jdbc:mondrian:Jdbc=jdbc:drill:drillbit=localhost:31010;schema=Saiku.root;Catalog=../webapps/saiku/WEB-INF/classes/imi_India/INDIA.xml;JdbcDrivers=org.apache.drill.jdbc.Driver;
23:59:21,878 WARN [RolapUtil] Mondrian: Warning: JDBC driver sun.jdbc.odbc.JdbcOdbcDriver not found
23:59:21,879 WARN [RolapUtil] Mondrian: Warning: JDBC driver oracle.jdbc.OracleDriver not found
23:59:22,162 WARN [DrillMetrics] Removing old metric since name matched newly registered metric. Metric name: drill.allocator.root.used
23:59:22,162 WARN [DrillMetrics] Removing old metric since name matched newly registered metric. Metric name: drill.allocator.root.peak
23:59:25,246 WARN [ThreadLocalRandom] Failed to generate a seed from SecureRandom within 3 seconds. Not enough entrophy?
mondrian.olap.MondrianException: Mondrian Error:Internal error: Error while creating SQL connection: Jdbc=jdbc:drill:drillbit=localhost:31010; JdbcUser=admin; JdbcPassword=admin
at mondrian.resource.MondrianResource$_Def0.ex(MondrianResource.java:972)
at mondrian.olap.Util.newInternal(Util.java:2403)
at mondrian.olap.Util.newError(Util.java:2419)
at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:246)
at mondrian.rolap.RolapSchema.<init>(RolapSchema.java:188)
at mondrian.rolap.RolapSchema.<init>(RolapSchema.java:216)
at mondrian.rolap.RolapSchemaPool.get(RolapSchemaPool.java:214)
at mondrian.rolap.RolapSchemaPool.get(RolapSchemaPool.java:66)
at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:160)
at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:90)
at mondrian.olap.DriverManager.getConnection(DriverManager.java:112)
at mondrian.olap.DriverManager.getConnection(DriverManager.java:68)
at mondrian.olap4j.MondrianOlap4jConnection.<init>(MondrianOlap4jConnection.java:153)
at mondrian.olap4j.FactoryJdbc4Plus$AbstractConnection.<init>(FactoryJdbc4Plus.java:323)
at mondrian.olap4j.FactoryJdbc41Impl$MondrianOlap4jConnectionJdbc41.<init>(FactoryJdbc41Impl.java:118)
at mondrian.olap4j.FactoryJdbc41Impl.newConnection(FactoryJdbc41Impl.java:32)
at mondrian.olap4j.MondrianOlap4jDriver.connect(MondrianOlap4jDriver.java:134)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at org.saiku.datasources.connection.SaikuOlapConnection.connect(SaikuOlapConnection.java:75)
at org.saiku.datasources.connection.SaikuOlapConnection.connect(SaikuOlapConnection.java:46)
at org.saiku.datasources.connection.SaikuConnectionFactory.getConnection(SaikuConnectionFactory.java:29)
at org.saiku.web.impl.SecurityAwareConnectionManager.connect(SecurityAwareConnectionManager.java:284)
at org.saiku.web.impl.SecurityAwareConnectionManager.getInternalConnection(SecurityAwareConnectionManager.java:99)
at org.saiku.datasources.connection.AbstractConnectionManager.getConnection(AbstractConnectionManager.java:110)
at org.saiku.datasources.connection.AbstractConnectionManager.getAllConnections(AbstractConnectionManager.java:136)
at org.saiku.web.impl.SecurityAwareConnectionManager.init(SecurityAwareConnectionManager.java:58)
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:497)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1536)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1409)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:574)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
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:497)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Could not create a validated object, cause: null
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:104)
at mondrian.rolap.RolapConnection.<init>(RolapConnection.java:226)
... 66 more
Caused by: java.util.NoSuchElementException: Could not create a validated object, cause: null
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1008)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:96)
... 67 more
现在我在应用程序的pom.xml中添加了依赖项
<dependency>
<groupId>org.apache.drill.exec</groupId>
<artifactId>drill-jdbc</artifactId>
<version>1.1.0</version>
</dependency>
并使用以下连接字符串
JDBC：钻头：钻头=本地主机：31010;架构= Saiku.root
我在HDFS目录/ dashboard / saiku3 // .paramelab
中也有大量的镶木地板文件有17个这样的表。我在/ saiku3中创建了一个名为Saiku的存储引擎，其中存储了root存储，并为所有17个hadoop目录创建了Views。这些目录已经通过Sqoop从mysql导入HDFS作为镶木地板。
我已经被困在这里好几个小时了，无法找到解决办法，我在这里做错了吗？
提前致谢。
答案 0 :(得分：1)
＆＃34;熵不够＆＃34; ？这是什么版本的Java？你好像在使用/ dev / random iso。的/ dev / urandom的。无论如何，你可以用-Djava.security.egd改变这个，如果我没有弄错的话。
答案 1 :(得分：0)
检查tomcat / lib中是否有drill-jdbc-all-1.8.0.jar