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Posted to commits@cassandra.apache.org by "Bret McGuire (Jira)" <ji...@apache.org> on 2025/02/07 06:34:00 UTC
[jira] [Updated] (CASSJAVA-68) Improve DefaultCodecRegistry.CacheKey#hashCode() to eliminate Object[] allocation
[ https://issues.apache.org/jira/browse/CASSJAVA-68?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bret McGuire updated CASSJAVA-68:
---------------------------------
Fix Version/s: 4.19.1
> Improve DefaultCodecRegistry.CacheKey#hashCode() to eliminate Object[] allocation
> ---------------------------------------------------------------------------------
>
> Key: CASSJAVA-68
> URL: https://issues.apache.org/jira/browse/CASSJAVA-68
> Project: Apache Cassandra Java driver
> Issue Type: Improvement
> Components: Core
> Reporter: Jane He
> Priority: Normal
> Fix For: 4.19.1
>
>
> From [~tatu-at-datastax] : Profiling showed significant {{Object[]}} allocations at {{DefaultCodecRegistry.CacheKey#hashCode()}} (since {{Object.hashCode(Object... args)}} takes varargs which gets converted into {{{}Object[]{}}}) so figured out it's worth improving upon.
>
> Also, another [ticket|https://datastax-oss.atlassian.net/browse/JAVA-3073] and [PR|https://github.com/apache/cassandra-java-driver/pull/1644] is about `Objects.hash` performance issue discovered by profiling. A quick text search shows that we have 60+ `Objects.hash` usage in our codebase. Maybe we should consider fixing other `Objects.hash` usages, too.
>
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