Exceptions occur in Workflow Designer / View Workflow using Java 1.7
Symptoms
When trying to view/edit a Workflow using the Workflow Designer or viewing a workflow through an issue JIRA throws exceptions:
| Using the ' View Workflow' button from within an issue | View Workflow from the Administration Panel | Editing Workflow using the Workflow Designer |
|---|---|---|
 |
|  |
The following appears in the atlassian-jira.log:
2013-03-12 16:53:52,473 http-bio-80-exec-25 ERROR erawlins 1013x164x1 85fimc 0:0:0:0:0:0:0:1 /plugins/servlet/workflow/thumbnail/getThumbnail [plugins.workflow.servlet.WorkflowThumbnailServlet] Error getting workflow thumbnail, returning default image.
java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.ComparableTimSort.mergeLo(ComparableTimSort.java:714)
at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:451)
at java.util.ComparableTimSort.mergeForceCollapse(ComparableTimSort.java:392)
... Or appears in the GUI, as from the previous screenshot:
com.exadel.flamingo.service.exception.ServiceInvokationException: java.lang.reflect.InvocationTargetException
at com.exadel.flamingo.service.spring.utils.AMFSpringMethodInvoker.makeCall(AMFSpringMethodInvoker.java:150)
at com.sysbliss.jira.plugins.workflow.amf.JWDAMF3RemotingMessageProcessor.process(JWDAMF3RemotingMessageProcessor.java:56)Cause
This seems to be happening due to a bug in Java 1.7 (FELIX-3571). We are also tracking this in JRA-32072 - Getting issue details... STATUS
Workaround
Java 6 is not supported for JIRA 6.0.x and higher. Unfortunately there is no current known workaround for this in JIRA 6.0.x and higher with a supported Java version.
- Shutdown JIRA.
- Install Java 6 as per our Installing Java docs.
- Restart JIRA.
Resolution
To fix this problem, please upgrade JIRA to version 6.1, which introduces a new workflow designer.