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https://issues.apache.org/jira/browse/NIFI-14155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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castile updated NIFI-14155:
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Attachment: (was: image-2025-01-14-22-37-44-670.png)
> JsonParserFactory will create an new ObjectMapper when process every
> flowfile, and the performance drops by more than 50%.
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: NIFI-14155
> URL: https://issues.apache.org/jira/browse/NIFI-14155
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework, Examples
> Affects Versions: 1.26.0
> Reporter: castile
> Priority: Blocker
> Labels: Record, json, performance
> Attachments: image-2025-01-14-22-32-30-460.png,
> image-2025-01-14-22-39-57-860.png, image-2025-01-14-22-41-56-719.png
>
>
> Our team is using nifi1.26.0. When using UpdateRecord processor or other
> processor sets that inherit
> org.apache.nifi.processors.standard.AbstractRecordProcessor, we found that
> its processing performance dropped by more than 50%. After our analysis, we
> found that in the Parser object created by
> org.apache.nifi.json.JsonParserFactory, an ObjectMapper object is created
> when processing each data, which consumes a lot of performance.
> !image-2025-01-14-22-32-30-460.png|width=522,height=258!
>
> ObjectMapper is a *{color:#ff0000}heavyweight{color}* object and is
> {color:#ff0000}*thread-safe*{color}. It seems that a static global or
> singleton instance should be created.
> We have run the performance tests and found that it was useful，here is the
> compare results：
> BEFORE：
> !image-2025-01-14-22-41-56-719.png|width=447,height=120!
> AFTER：
> !image-2025-01-14-22-39-57-860.png|width=631,height=172!
> When each JSON data is large, the gap will be more obvious！！！！
> ------------------------------------------------------------------------
> *{color:#ff0000}No matter what，the ObjectMapper object should be unique in
> the controller service（For example, JsonTreeReader
> ）,and should not be created when processing each flowfile.{color}*
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