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Mark Payne commented on NIFI-810:
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[~aldrin]: thoughts on using an annotation like "@InputRequirement" that takes an enumeration
instead of @IgnoresInput and @RequestInput? Then you could use one of:
@InputRequirement(INPUT_REQUIRED)
@InputRequirement(INPUT_OPTIONAL)
@InputRequirement(INPUT_FORBIDDEN)
If the annotation is not present, it would be the same as using INPUT_OPTIONAL, which is how
this behaves now.
Not sure which way is cleaner: to have explicit annotations for each or to have an annotation
that accepts input?
> Create Annotation that indicates that a Processor cannot be scheduled to run without
an incoming connection
> -----------------------------------------------------------------------------------------------------------
>
> Key: NIFI-810
> URL: https://issues.apache.org/jira/browse/NIFI-810
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: Mark Payne
>
> Currently, if a Processor has no incoming connections but is started, it will continually
without ever accomplishing anything. We should have an annotation, perhaps @RequiresInput,
that indicates that the Processor should not be scheduled to run unless it has an incoming
connection.
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