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https://issues.apache.org/jira/browse/CASSANDRA-12030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-12030:
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Reviewer: Sylvain Lebresne
> Range tombstones that are masked by row tombstones should not be written out
> ----------------------------------------------------------------------------
>
> Key: CASSANDRA-12030
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12030
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Nachiket Patil
> Assignee: Nachiket Patil
> Priority: Minor
> Attachments: cassandra-12030-2.1.diff, cassandra-12030-2.2.diff
>
>
> During compaction, if a table has range tombstone and a row delete with
> higher timestamp than range tombstone, both are written out to disk. Some
> problems seen because of this behavior:
> 1. The Range tombstone is expensive to maintain.
> 2. Range queries see timeouts when there are too many range tombstones
> present which may be masked by row tombstones.
> This can be avoided with simple optimization to not write out range tombstone
> if it is masked by row delete.
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