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https://issues.apache.org/jira/browse/NIFI-11105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17681147#comment-17681147
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ASF subversion and git services commented on NIFI-11105:
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Commit d9f35b89741ff2cd13ad77b7a8f995c96bac36b7 in nifi's branch
refs/heads/main from Mark Payne
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=d9f35b8974 ]
NIFI-11105: This closes #6895. When mapping Parameter Context to
VersionedParameterContext, don't bother mapping those that have already been
mapped, as it is redundant
Signed-off-by: Joe Witt <[email protected]>
> Download Flow takes long time when there are many Process Groups with
> Parameter Contexts
> ----------------------------------------------------------------------------------------
>
> Key: NIFI-11105
> URL: https://issues.apache.org/jira/browse/NIFI-11105
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.20.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When we export a flow for download, we have to serialize any referenced
> Parameter Context as part of the JSON. To do this, we build up a collection
> of VersionedParameterContexts. The logic that we use does this for every
> Process Group. So if we have many small Process Groups, each bound to a
> Parameter Context, we formulate that VersionedParameterContext every time.
> However, there is no need to create more than one VersionedParameterContext
> for each existing ParameterContext. This mapping becomes very expensive and
> can take many minutes for flows that contain lots of Parameters and lots of
> Process Groups.
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