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Posted to commits@cassandra.apache.org by "Benjamin Lerer (JIRA)" <ji...@apache.org> on 2015/03/16 14:13:38 UTC

[jira] [Updated] (CASSANDRA-8603) Cut tombstone memory footprint in half for cql deletes

     [ https://issues.apache.org/jira/browse/CASSANDRA-8603?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benjamin Lerer updated CASSANDRA-8603:
--------------------------------------
         Reviewer: Benjamin Lerer
    Reproduced In: 2.1.2, 2.0.11  (was: 2.0.11, 2.1.2)

> 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
>              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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