Hi All,

We are setting up Apache Kylin to be integrated with one of our product. 
However, the environment is not going up and running with below error message:

INFO: Deploying web application archive /opt/kylin2.5/tomcat/webapps/kylin.war
Mar 28, 2019 5:46:21 PM org.apache.catalina.core.ContainerBase addChildInternal
SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component 
[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/kylin]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
        at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017)
        at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
        at 
org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
        at 
org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2021)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:522)
        at java.util.concurrent.FutureTask.run(FutureTask.java:277)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1160)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.lang.Thread.run(Thread.java:812)
Caused by: java.lang.NoSuchMethodError: 
org/apache/tomcat/JarScanner.scan(Lorg/apache/tomcat/JarScanType;Ljavax/servlet/ServletContext;Lorg/apache/tomcat/JarScannerCallback;)V
 (loaded from file:/opt/kylin2.5/tomcat/lib/tomcat-api.jar by 
sun.misc.Launcher$AppClassLoader@5c85b446) called from class 
org.apache.jasper.servlet.TldScanner (loaded from 
file:/opt/hive/lib/jetty-runner-9.3.20.v20170531.jar by 
sun.misc.Launcher$AppClassLoader@5c85b446).
        at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262)
        at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:106)
        at 
org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:103)
        at 
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5669)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
        ... 10 more


Below are the component successfully setup as a supporting environment for 
Kylin:


  *   Hadoop cluster with three nodes.(Hadoop version 2.8.5)
  *   Hbase (Version 1.4.8)
  *   Hive (Version 3.1.1)
  *   Spark 2.4.0


Kylin versions tried:

  *   Kylin 2.6.1
  *   Kylin 2.5.0

Installation Guide followed from here http://kylin.apache.org/docs/install/

We thought of the runtime library difference between tomcat-api.jar and jetty 
runner, so tried upgrading both the jars, however, it didn't produce any 
positive results.

Regards,
Yogita Mokate


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