ASF GitHub Bot commented on NIFI-5308:

Github user asfgit closed the pull request at:


> 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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