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https://issues.apache.org/jira/browse/NIFI-3249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15783611#comment-15783611
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ASF GitHub Bot commented on NIFI-3249:
--------------------------------------
Github user JPercivall commented on the issue:
https://github.com/apache/nifi/pull/1356
+1
Visually verified code and did a contrib-check build. In standalone tested
many different updateAttribute configurations hitting: regular update, delete,
stateful update, and stateful update with advanced rule. All worked as
expected. Thanks @brosander I will merge it in.
> 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
> Attachments: after.png, before.png
>
>
> 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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