I just tried migrating from 6.2.5 to JIRA 7.0 (JIRA Software) following the Rapid Upgrade Method for our local Windows server (Windows Server 2012 R2 64-bit). We had JIRA + JIRA Agile installed, with several plugins.
The installer finished with no errors, but JIRA is no longer working. The service appears to be running (I can stop it and start it), and the Event viewer contains no logs. When I try to open the page inside a browser, it just closes the socket with no response.
Checking the logs directory revealed a bunch of errors during startup:
The stdout log (jira200214103609-stdout.2015-10-13.log) shows that the service cannot instantiate practically any class, saying that major.minor version is unsupported:
2015-10-13 13:21:03 Commons Daemon procrun stdout initialized
2015-10-13 13:21:15,642 localhost-startStop-1 ERROR [o.a.c.c.C.[Catalina].[localhost].[/]] Error configuring application listener of class com.atlassian.jira.web.ServletContextProviderListener
java.lang.UnsupportedClassVersionError: com/atlassian/jira/web/ServletContextProviderListener : Unsupported major.minor version 52.0 (unable to load class com.atlassian.jira.web.ServletContextProviderListener)
at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2476)
at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:854)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1274)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:520)
... 7 filtered
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
The stderr log (jira200214103609-stderr.2015-10-13.log) shows many errors failing to instantiate log4j appenders:
log4j:ERROR Could not instantiate class [com.atlassian.jira.logging.JiraHomeAppender].
Is there a step I missed during the installation?