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https://issues.apache.org/jira/browse/NIFI-8039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Bence updated NIFI-8039:
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Status: Patch Available (was: In Progress)
https://github.com/apache/nifi/pull/4689
> Decrease the initial resource reservation of Listen processor family
> --------------------------------------------------------------------
>
> Key: NIFI-8039
> URL: https://issues.apache.org/jira/browse/NIFI-8039
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Simon Bence
> Assignee: Simon Bence
> Priority: Major
> Fix For: 1.13.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> ListenTCP processor and other processors in the listen family are reserve
> resources at initialisation based on properties on the processor. This
> includes:
> * Executor in SocketChannelDispatcher is created using fixed thread pool
> * Byte buffer pool is build up based on Max Number of TCP Connections which
> with high connection can consume high amount of memory
> In some use cases this is undesirable and might even cause failure of the
> initialisation. In order to avoid this I suggest to remove the buffer pool
> and replace the fixed thread pool into a more flexible (scaling)
> implementation.
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