Hi jiajing, Thank you for your detailed analysis and the workaround provided by you. Issue-1 and Issue-3 is not user-friendly and may mislead user, so we will try fix it in next release. For Issue02, since we test kylin binary on CDH6.1(but not CDH6.2 or higher version) before release, so we did not face the class miss problem. We will consider check in more newer version of CDH. We will be glad if hear more suggestion from you in the future.
---------------- Best wishes, Xiaoxiang Yu 发件人: Jiajing Li <[email protected]> 答复: "[email protected]" <[email protected]> 日期: 2019年10月17日 星期四 11:23 收件人: user <[email protected]> 主题: web ui error on apache-kylin-3.0.0-alpha2-bin-cdh60, issue reporting and workaround Hi, everyone I am trying to setup kylin inside Docker. working with Centos 7 and CDH 6.3 Everything is going well until I ran into some web ui issue. kylin version: 47faa1810f21fa8c4c109b82af9eb09d44c2f0d14d245a94655aaf783780a143 apache-kylin-3.0.0-alpha2-bin-cdh60.tar.gz appearance : kylin started but web ui returns 404 on every request Issue 1 : keystored was required for https connector but no keystore was shipped , and no document in kylin about how to deal with it : following config from default $KYLIN_HOME/tomcat/conf/server.xml <Connector port="7443" protocol="org.apache.coyote.http11.Http11Protocol" maxThreads="150" SSLEnabled="true" scheme="https" secure="true" keystoreFile="conf/.keystore" keystorePass="changeit" clientAuth="false" sslProtocol="TLS" /> results in throwing the exception: [main] core.StandardService:164 : Failed to initialize connector [Connector[org.apache.coyote.http11.Http11Protocol-7443]] org.apache.catalina.LifecycleException: Failed to initialize component [Connector[org.apache.coyote.http11.Http11Protocol-7443]] I work around Issue 1 by adding a dummy keystore using keytool # cd $KYLIN_HOME && sudo -u kylin keytool -genkey -alias tomcat -keyalg RSA -keystore .keystore -storepass changeit but I consider it is a bad practice , hard to use and potential security risks. kylin should comment out the SSL enabled port , and document the SSL & keystore settings for kylin admin . Issue 2: dependency missing on commons-configuration result in throwing following exception: [localhost-startStop-1] [localhost].[/kylin]:164 : Exception sending context initialized event to listener instance of class [org.springframework.web.context.ContextLoaderListener] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/apache/commons/configuration/ConfigurationException I work around Issue 2 by downloading commons-configuration-1.10.jar from mvnrepository.com, and put it in $KYLIN_HOME/tomcat/libs maybe a symbolic link from any compatible version of commons-configuration jar file could do the same. commons-configuration-version.jar was shipped with hbase and hadoop and spark and hive, but not with kylin. and somehow kylin in my environment failed to locate it. solve missing dependency may be obvious and easy for java developers , but not true for everyone Issue 3: scanning for unnecessary derbyLocale files under $SPARK_HOME. result in error logs in following pattern , looks like it is scanning on every possible locale ,not only this sample line [localhost-startStop-1] scan.StandardJarScanner:146 : Failed to scan [file:/usr/lib/spark/jars/derbyLocale_cs.jar] from classloader hierarchy Issue 3 is unsolved, after patching Issue 2 kylin web UI is ready to use. I do not understand why web ui is doing this scanning, maybe rooted in CDH6 spark , but since it is logged by kylin process, I think it is reasonable to report it .
