Bryan Rosander created NIFI-3249:
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Summary: UpdateAttribute performance improvements
Key: NIFI-3249
URL: https://issues.apache.org/jira/browse/NIFI-3249
Project: Apache NiFi
Issue Type: Improvement
Reporter: Bryan Rosander
Assignee: Bryan Rosander
Priority: Minor
UpdateAttribute does a lot of work in every onTrigger() that it doesn't need to.
The default actions map can be built at schedule time so that it doesn't need
to be done on every trigger.
getPropertyValue() can be implemented using ConcurrentMap.computeIfAbsent()
Update actions can be ignored if there is a delete action for the same
attribute.
Only need to call processSession.updateAttributes() and
processSession.deleteAttributes() if there are attributes to update and delete
respectively.
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