David Handermann created NIFI-10031:
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Summary: Downgrade Jakarta Mail to 1.6.7 in Bootstrap
Key: NIFI-10031
URL: https://issues.apache.org/jira/browse/NIFI-10031
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.16.1
Reporter: David Handermann
Assignee: David Handermann
Fix For: 1.17.0, 1.16.2
Jakarta Mail 2 included changes to use the new API and implementation classes
with the {{jakarta}} namespace instead of the {{javax}} namespace. Jakarta Mail
2 depends on Jakarta Activation 2, which includes the same namespaces changes.
This works for extension components, but creates problems at runtime when
running on Java 11 and higher since NiFi includes dependencies on JAXB 2
runtime libraries that require Jakarta Activation 1. The NiFi startup process
includes the JAXB 2 runtime libraries when running on Java 11, resulting in
class conflicts due to incompatible versions of Jakarta Activation 1 and 2.
Upgrading JAXB 2 to JAXB 3 requires API and implementation changes that impact
a large number of classes, which should be addressed separately. To maintain
compatibility with JAXB 2 on Java 11 and higher, Jakarta Mail 2 should be
downgraded to Jakarta Mail 1 for the {{nifi-bootstrap}} module and the Email
Notification Service.
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