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https://issues.apache.org/jira/browse/NIFI-14255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann updated NIFI-14255:
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Affects Version/s: 2.2.0
2.0.0
> SimpleRecordSchema.equals method is very slow
> ---------------------------------------------
>
> Key: NIFI-14255
> URL: https://issues.apache.org/jira/browse/NIFI-14255
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 2.0.0, 2.2.0
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 2.3.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The equals method for SimpleRecordSchema calls {{isRecursive()}} which is
> very slow. The method converts a List<RecordField> into a Stream, and then
> for each element calls DataType.isRecursive() which often does the same.
> Stream creation is very slow. This causes any {{Map<RecordSchema, ?>}} type
> of structure to be very slow.
> We can re-implement to avoid any stream creation. In addition, once the
> {{isRecursive()}} method finishes its calculation, its value can be stored in
> a member variable. The value will not change unless its fields change. So we
> can just lazily initialize the member variable and clear it if fields are
> changed.
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