JIRA Functionality Fails due to Incompatible magic value 0 in class file Error
Symptoms
- JIRA actions fail, such as creating issues.
The following appears in the atlassian-jira.log:
2013-07-17 01:29:00,714 http-bio-8443-exec-23 ERROR [500ErrorPage.jsp] Exception caught in 500 page Incompatible magic value 0 in class file com/atlassian/jira/workflow/function/issue/IssueCreateFunction
java.lang.ClassFormatError: Incompatible magic value 0 in class file com/atlassian/jira/workflow/function/issue/IssueCreateFunction
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2901)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) <+2> (WebappClassLoader.java:1678) (WebappClassLoader.java:1556)
at com.atlassian.core.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:72)
at com.atlassian.core.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:50)Cause
The ClassFormatError is thrown when the JVM finds the class file to be either malformed or it cannot interpret it. This would seem to imply there's a problem with the bytecode (this is the compiled version of the class). It is most commonly caused by incorrectly modifying the file, a failed un-compression attempt or corrupted download.
Resolution
- Backup the file that is causing problems. In this example, it is
com/atlassian/jira/workflow/function/issue/IssueCreateFunction.class. - Download the appropriate version for your JIRA instance from http://www.atlassian.com/software/jira/download. Ensure this is an archive file (either a ZIP or tar.gz).
- Expand the download and locate the file.
Replace the downloaded file with the corrupted file.
- Restart JIRA.
Last modified on Mar 30, 2016
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