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https://issues.apache.org/jira/browse/CASSANDRA-11427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15217871#comment-15217871
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Stefan Podkowinski commented on CASSANDRA-11427:
------------------------------------------------
Proposed patch added (2.1 + 2.2).
||2.1||2.2||
|[branch|https://github.com/spodkowinski/cassandra/tree/CASSANDRA-11427-2.1]|[branch|https://github.com/spodkowinski/cassandra/tree/CASSANDRA-11427-2.2]|
|[testall|http://cassci.datastax.com/view/Dev/view/spodkowinski/job/spodkowinski-CASSANDRA-11427-2.1-testall/]|[testall|http://cassci.datastax.com/view/Dev/view/spodkowinski/job/spodkowinski-CASSANDRA-11427-2.2-testall/]|
|[dtest|http://cassci.datastax.com/view/Dev/view/spodkowinski/job/spodkowinski-CASSANDRA-11427-2.1-dtest/]|[dtest|http://cassci.datastax.com/view/Dev/view/spodkowinski/job/spodkowinski-CASSANDRA-11427-2.2-dtest/]|
> Range slice queries CL > ONE trigger read-repair of purgable tombstones
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-11427
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11427
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stefan Podkowinski
> Assignee: Stefan Podkowinski
> Attachments: 11427-2.1.patch
>
>
> Executing range queries (e.g. for reading token ranges) will compare the
> actual data instead of using digests when executed with CL > ONE. Responses
> will be consolidated by {{RangeSliceResponseResolver.Reducer}}, where the
> result of {{RowDataResolver.resolveSuperset}} is used as the reference
> version for the results. {{RowDataResolver.scheduleRepairs}} will then send
> the superset to all nodes that returned a different result before.
> Unfortunately this does also involve cases where the superset is just made up
> of purgable tombstone(s) that already have been compacted on the other nodes.
> In this case a read-repair will be triggered for transfering the purgable
> tombstones to all other nodes nodes that returned an empty result.
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