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https://issues.apache.org/jira/browse/CASSANDRA-10193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14730718#comment-14730718
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Benedict commented on CASSANDRA-10193:
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Agreed. Filed CASSANDRA-10266, so as not to delay this past beta2.
> Improve Rows.diff and Rows.merge efficiency; downgrade Row.columns() to
> Collection<ColumnDefinition>
> ----------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-10193
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10193
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Benedict
> Assignee: Benedict
> Fix For: 3.0.0 rc1
>
>
> There's not really a lot of reason to store a Columns instance in each row.
> Retaining it introduces extra costs on every row merge, in both consumed CPU
> time and heap.
> While working on CASSANDRA-10045 it became apparent this would be very easy
> to remove, however to avoid scope creep I have filed this as a follow up
> ticket.
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