java.lang.NoClassDefFoundError: com/atlassian/jira/event/type/EventType

[sukkeong]

After recent restart of JIRA and redeployment of plugin, an exception was raised

Caused by: java.lang.NoClassDefFoundError: com/atlassian/jira/event/type/EventType

The reporteed line:

return eventType.getId() == EventType.ISSUE_ASSIGNED_IDOn the class that was not modified. Previously, there has not been any issue. In fact, behaviour of plugin does not appear to be affected. (However, did not test on partner JIRA that is has a differnt language locale)

When I removed the code, and recompiled and redeployed. The same exception is thrown.

Later, running atlas-clean and atlas-package and restarting JIRA again, the exception was thrown again, but on the empty line of the removed code.

Checked my dependencies. 

    <dependency>
      <groupId>com.atlassian.jira</groupId>
      <artifactId>jira-api</artifactId>
      <version>${jira.version}</version>
      <scope>provided</scope>
    </dependency>
    <!-- Add dependency on jira-core if you want access to JIRA implementation classes as well as the sanctioned API. -->
    <!-- This is not normally recommended, but may be required eg when migrating a plugin originally developed against JIRA 4.x -->
    <dependency>
      <groupId>com.atlassian.jira</groupId>
      <artifactId>jira-core</artifactId>
      <version>${jira.version}</version>
      <scope>provided</scope>
    </dependency>

What is going on? This has not occured before today.

How is this to be resolved?

[Thomas Schlegel · Accepted solution]

Duplicate question. Please post your answers here:

https://community.atlassian.com/t5/JIRA-questions/java-lang-NoClassDefFoundError-com-atlassian-jira-event-type/qaq-p/598430