[jira] [Created] (NIFI-15091) Evaluate NiFi's default JVM GC args. Consider adding UseStringDeduplication

["Kevin Doran (Jira)" <ji...@apache.org>]

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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