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Task #7177

Updated by ben leinfelder about 7 years ago

I was working with Eva-Maria.Gerstner@senckenberg.de on an installation of Metacat 2.8.1 and we could not get Metacat to fully initialize after configuring it in the admin screens. On restart, we would get as far as the  

 <pre><code class="text"> 
  
 metacat 20170324-18:24:19: [DEBUG]: XMLService.doRefresh - refreshing the schema service. [edu.ucsb.nceas.metacat.service.XMLSchemaService] 
 </code></pre> 

 and then it would never get beyond that because of an unexpected exception in that routine: 

 <pre><code class="text"> 
 24-Mar-2017 18:15:38.600 SCHWERWIEGEND [localhost-startStop-1] org.apache.catalina.core.StandardContext.loadOnStartup Servlet [metacat] in web application [/metacat] threw load() exception 
  java.lang.NullPointerException 
     at edu.ucsb.nceas.metacat.service.XMLSchemaService.populateRegisteredSchemaList(XMLSchemaService.java:331) 
     at edu.ucsb.nceas.metacat.service.XMLSchemaService.doRefresh(XMLSchemaService.java:129) 
     at edu.ucsb.nceas.metacat.service.XMLSchemaService.<init>(XMLSchemaService.java:101) 
     at edu.ucsb.nceas.metacat.service.XMLSchemaService.getInstance(XMLSchemaService.java:114) 
     at edu.ucsb.nceas.metacat.MetaCatServlet.initSecondHalf(MetaCatServlet.java:350) 
     at edu.ucsb.nceas.metacat.MetaCatServlet.init(MetaCatServlet.java:315) 
     at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) 
     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1099) 
     at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989) 
     at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4913) 
     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5223) 
     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) 
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) 
     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) 
     at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952) 
     at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823) 
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
     at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
     at java.lang.Thread.run(Thread.java:745) 
 </code></pre>

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