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https://issues.apache.org/jira/browse/CASSANDRA-20167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Konstantinov updated CASSANDRA-20167:
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Change Category: Performance
Complexity: Low Hanging Fruit
Component/s: Consistency/Coordination
Local/Other
Fix Version/s: 5.0.x
Status: Open (was: Triage Needed)
> Reduce memory allocations in miscellaneous places along write path
> ------------------------------------------------------------------
>
> Key: CASSANDRA-20167
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20167
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Consistency/Coordination, Local/Other
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 5.0.x
>
> Attachments: image-2024-12-26-22-01-32-592.png,
> image-2024-12-26-22-01-55-614.png, image-2024-12-26-22-02-44-040.png,
> image-2024-12-26-22-03-49-018.png
>
>
> Avoid unnecessary allocations in different places along write path:
> * avoid iterator allocations if possible
> * handle typical cases (such as a single row, single table writes) more
> efficiently
> * add fast paths for typical scenarios (like pending ranges is empty)
> * memorize things which can be computed once
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