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https://issues.apache.org/jira/browse/CASSANDRA-19191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcus Eriksson updated CASSANDRA-19191:
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Attachment: ci_summary-1.html
> Optimisations to PlacementForRange, improve lookup on r/w path
> --------------------------------------------------------------
>
> Key: CASSANDRA-19191
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19191
> Project: Cassandra
> Issue Type: Improvement
> Components: Transactional Cluster Metadata
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Priority: Normal
> Fix For: 5.1-alpha1
>
> Attachments: ci_summary-1.html, ci_summary.html, result_details.tar.gz
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The lookup used when selecting the appropriate replica group for a range or
> token while peforming reads and writes is extremely simplistic and
> inefficient. There is plenty of scope to improve {{PlacementsForRange}} to by
> replacing the current naive iteration with use a more efficient lookup.
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