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https://issues.apache.org/jira/browse/CASSANDRA-2524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637834#comment-13637834
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Vijay commented on CASSANDRA-2524:
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Marcus, I think jonathan is talking about the use of this optimization, since
users might not need to run cleanup after 5051.
> Use SSTableBoundedScanner for cleanup
> -------------------------------------
>
> Key: CASSANDRA-2524
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2524
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Stu Hood
> Assignee: Marcus Eriksson
> Priority: Minor
> Labels: lhf
> Fix For: 2.0
>
> Attachments:
> 0001-CASSANDRA-2524-use-SSTableBoundedScanner-for-cleanup.patch,
> 0001-Use-a-SSTableBoundedScanner-for-cleanup-and-improve-cl.txt,
> 0002-Oops.-When-indexes-or-counters-are-in-use-must-continu.txt
>
>
> SSTableBoundedScanner seeks rather than scanning through rows, so it would be
> significantly more efficient than the existing per-key filtering that cleanup
> does.
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