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https://issues.apache.org/jira/browse/NIFI-5308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Gilman resolved NIFI-5308.
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Resolution: Fixed
> Avoid holding DOM Node for templates in memory
> ----------------------------------------------
>
> Key: NIFI-5308
> URL: https://issues.apache.org/jira/browse/NIFI-5308
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.7.0
>
>
> As part of the changes made for NIFI-950, in order to improve clustering
> stability we changed the serialization of templates so that once serialized,
> we keep the DOM node in memory because it's much more efficient than
> serializing each time. However, use of the application has shown that with a
> fairly significant number of templates, the DOM nodes can lead to rather
> extensive heap utilization, causing the nodes themselves to become unstable.
> It's better to avoid this caching and just revert to the way that we
> previously were handling template serialization.
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