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vincent royer commented on CASSANDRA-13499:
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Yes, indexes.values() returns one object per indexed columns, so one call to
every per column index.
For per row index, this involve many calls to the same underling row index.
Using a set of index (see variable *indexesSet* in my patch) rather than
indexes.values() allow to call only once the underlying row index.
> Avoid duplicate calls to the same custom row index
> --------------------------------------------------
>
> Key: CASSANDRA-13499
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13499
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: vincent royer
> Priority: Minor
> Fix For: 3.0.14, 3.11.0, 4.x
>
> Attachments: 0006-Avoid-duplicate-calls-to-the-same-custom-index.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> Avoid duplicate calls to the same custom row index by using a dedicated
> Set<Index> rather than the collection indexes.values().
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