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https://issues.apache.org/jira/browse/CASSANDRA-1267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909561#action_12909561
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T Jake Luciani commented on CASSANDRA-1267:
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FYI, This didn't make it into 0.7-beta1 somehow
> Improve performance of cached row slices
> ----------------------------------------
>
> Key: CASSANDRA-1267
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1267
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: T Jake Luciani
> Assignee: T Jake Luciani
> Priority: Minor
> Fix For: 0.7 beta 1
>
> Attachments: 1267-v2.txt, 1267-v3.txt,
> cached-row-slice-perf-patch-1.txt
>
>
> In Lucandra, I have a use case to pull all columns for a given row.
> I've noticed that for rows with large numbers of columns this takes much
> longer than I would think since row caching is enabled.
> After looking into this I see that the cached row is rebuilt and pruned even
> though I want all columns.
> This patch skips this use case and in my case has improved performance
> significantly.
> From ~400ms to ~50ms
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