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Task #7177

open

Ensure Metacat runs on Tomcat 8

Added by ben leinfelder over 7 years ago. Updated about 7 years ago.

Status:
New
Priority:
Normal
Assignee:
Jing Tao
Category:
metacat
Target version:
2.9.0
Start date:
03/24/2017
Due date:
% Done:

0%

Estimated time:

Description

I was working with 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

metacat 20170324-18:24:19: [DEBUG]: XMLService.doRefresh - refreshing the schema service. [edu.ucsb.nceas.metacat.service.XMLSchemaService]

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

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)
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