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https://issues.apache.org/jira/browse/CASSANDRA-21199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated CASSANDRA-21199:
--------------------------------------------
Change Category: Performance
Complexity: Low Hanging Fruit
Component/s: Local/Other
Fix Version/s: 6.x
7.x
Status: Open (was: Triage Needed)
> ProtocolVersion::supportedVersions can be computed once to avoid showing up
> in allocation profiles
> --------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-21199
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21199
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Local/Other
> Reporter: Matt Byrd
> Assignee: Matt Byrd
> Priority: Normal
> Fix For: 6.x, 7.x
>
> Attachments: CASSANDRA-21394_mbyrd_trunk_ci_summary.html, Screenshot
> 2026-03-04 at 7.01.51 PM.png
>
>
> It's a relatively small amount in one allocation profile (see attached
> screenshot) ~0.3% of allocations, but still seems un-necessary as we're
> copying elements from a static final EnumSet
> {code}
> /** All supported versions, published as an enumset */
> public final static EnumSet<ProtocolVersion> SUPPORTED =
> EnumSet.copyOf(Arrays.asList(ArrayUtils.addAll(SUPPORTED_VERSIONS)));
> {code}
> Could instead just compute this in static initialization .
> {code}
> public static List<String> supportedVersions()
> {
> List<String> ret = new ArrayList<>(SUPPORTED.size());
> for (ProtocolVersion version : SUPPORTED)
> ret.add(version.toString());
> return ret;
> }
> {code}
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