Peter Wicks created NIFI-6344:
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Summary: Add Failure Relationship to UpdateAttribute
Key: NIFI-6344
URL: https://issues.apache.org/jira/browse/NIFI-6344
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: Peter Wicks
Assignee: Peter Wicks
EL makes it possible for an UpdateAttribute processor to fail. When this
happens the FlowFile is rolled back, and there is no way to route it to handle
the failure automatically.
Considerations:
UpdateAttribute is used in probably all but the simplest of flows, thus any
change made to support a failure relationship must be handled delicately. The
goal of this change is for users to have no change in functionality unless they
specifically configure it.
Proposal:
It was proposed on the Slack channel to create the failure relationship, but
default it to auto-terminate. This is a good start, but without further work
would result in a change in functionality. I propose that we will default to
auto-terminate, but also detect this behavior in the code. If the Failure
relationship is set to auto-terminate then we will rollback the transaction.
The only downside I see with this is you can't actually auto-terminate Failures
without the addition of another property, such as Failure Behavior: Route to
Failure and Rollback options.
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