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https://issues.apache.org/jira/browse/CASSANDRA-8603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14502865#comment-14502865
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Sylvain Lebresne commented on CASSANDRA-8603:
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bq. Sylvain Lebresne could you confirm my analysis?
Yes, that sounds right.
> Cut tombstone memory footprint in half for cql deletes
> ------------------------------------------------------
>
> Key: CASSANDRA-8603
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8603
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Dominic Letz
> Assignee: Dominic Letz
> Labels: tombstone
> Attachments: cassandra-2.0.11-8603.txt, cassandra-2.1-8603.txt,
> cassandra-2.1-8603_v2.txt, system.log
>
>
> As CQL does not yet support range deletes every delete from CQL results in a
> "Semi-RangeTombstone" which actually has the same start and end values - but
> until today they are copies. Effectively doubling the required heap memory to
> store the RangeTombstone.
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