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https://issues.apache.org/jira/browse/NIFI-4872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368244#comment-16368244
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ASF GitHub Bot commented on NIFI-4872:
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Github user pvillard31 commented on the issue:
https://github.com/apache/nifi/pull/2475
Few suggestions regarding existing processors: ExtractText and ReplaceText
can also be CPU intensive when using some tricky regular expressions. Same goes
for grok processors as well as TransformXML (depends of the XSLT). It's not
true in most cases but it can be in some situations. Will try to continue the
review early next week.
> NIFI component high resource usage annotation
> ---------------------------------------------
>
> Key: NIFI-4872
> URL: https://issues.apache.org/jira/browse/NIFI-4872
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Core Framework, Core UI
> Affects Versions: 1.5.0
> Reporter: Jeff Storck
> Assignee: Jeff Storck
> Priority: Critical
>
> NiFi Processors currently have no means to relay whether or not they have may
> be resource intensive or not. The idea here would be to introduce an
> Annotation that can be added to Processors that indicate they may cause high
> memory, disk, CPU, or network usage. For instance, any Processor that reads
> the FlowFile contents into memory (like many XML Processors for instance) may
> cause high memory usage. What ultimately determines if there is high
> memory/disk/cpu/network usage will depend on the FlowFiles being processed.
> With many of these components in the dataflow, it increases the risk of
> OutOfMemoryErrors and performance degradation.
> The annotation should support one value from a fixed list of: CPU, Disk,
> Memory, Network. It should also allow the developer to provide a custom
> description of the scenario that the component would fall under the high
> usage category. The annotation should be able to be specified multiple
> times, for as many resources as it has the potential to be high usage.
> By marking components with this new Annotation, we can update the generated
> Processor documentation to include this fact.
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