Mark Payne created NIFI-13563:
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Summary: Replay Last Event sometimes fails
Key: NIFI-13563
URL: https://issues.apache.org/jira/browse/NIFI-13563
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Reporter: Mark Payne
Assignee: Mark Payne
When building a flow, the ability to click "Replay Last Event" can be
incredibly powerful and convenient, giving the user the ability to more quickly
verify changes. However, it sometimes can fail, depending on what the latest
event was. For example, a JOIN event cannot be replayed because it would mean
re-queuing potentially huge numbers of FlowFiles. Often, though, a Processor
will emit multiple events in the same invocation.
To account for this, instead of only retrieving the last event for a Processor,
retrieve the last "event set" - that is, all events from the last invocation of
a Processor and iterate through all of them until able to replay an event.
This also provides some value, in that we could potentially return the latest
"event set" for consumption, as it may provide value over the entirety of all
events for the Processor.
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