Confluence Initial setup Error

[Blaf Kloba]

Hello - We are evaluating Confluence for a customer and see an error while setting it up on an AWS instance.

Below is the error we see after a trial license is generated and hangs on the next screen spewing this output on the log before failing.

13-Jan-2017 10:39:07.569 WARNING [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread "http-nio-8090-exec-4" (id=38) has been active for 63,530 milliseconds (since 1/13/17 10:38 AM) to serve the same request for http://confluence-1529798662.us-east-1.elb.amazonaws.com/setup/setupembeddeddb-default.action and may be stuck (configured threshold for this StuckThreadDetectionValve is 60 seconds). There is/are 1 thread(s) in total that are monitored by this Valve and may be stuck.
 java.lang.Throwable
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.<init>(ZipFile.java:219)
        at java.util.zip.ZipFile.<init>(ZipFile.java:149)
        at java.util.jar.JarFile.<init>(JarFile.java:166)
        at java.util.jar.JarFile.<init>(JarFile.java:103)
        at org.apache.catalina.webresources.AbstractArchiveResourceSet.openJarFile(AbstractArchiveResourceSet.java:308)
        at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.getArchiveEntry(AbstractSingleArchiveResourceSet.java:93)
        at org.apache.catalina.webresources.AbstractArchiveResourceSet.getResource(AbstractArchiveResourceSet.java:260)
        at org.apache.catalina.webresources.StandardRoot.getResourceInternal(StandardRoot.java:281)
        at org.apache.catalina.webresources.Cache.getResource(Cache.java:63)
        at org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:216)
        at org.apache.catalina.webresources.StandardRoot.getClassLoaderResource(StandardRoot.java:225)
        at org.apache.catalina.loader.WebappClassLoaderBase.findResourceInternal(WebappClassLoaderBase.java:2624)
        at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2461)
        at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:859)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1302)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1167)
        at java.lang.Class.forName0(Native Method)

[Blaf Kloba · Accepted solution]

This was due to having a JIRA instance using a embedded database. Switching the confluence to a postgresql database and redoing the installation for confluence fixed the error.