Kevin Doran created NIFI-15091:
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Summary: Evaluate NiFi's default JVM GC args. Consider adding
UseStringDeduplication
Key: NIFI-15091
URL: https://issues.apache.org/jira/browse/NIFI-15091
Project: Apache NiFi
Issue Type: Improvement
Components: Configuration
Reporter: Kevin Doran
Assignee: Kevin Doran
There was recently an [interesting
discussion|https://github.com/apache/nifi/pull/10372#issuecomment-3362326306]
on the use of `-XX:+UseStringDeduplication` benefiting NiFi clusters that
process many FlowFiles containing many FlowFile attributes, potentially with
duplicate values.
At a glance, it seems that many NiFi use cases would benefit from enabling the
`UseStringDeduplication` JVM GC arg, and there is probably little to no
downside or risk to enabling it by default, even for use cases might not
benefit.
We should profile one or more representative flows in NiFi with and without
this flag, quantify the potential savings, and, if merited, consider enabling
this GC option by default in the JVM args of `bootstrap.conf` sourced by
`nifi.sh`.
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