[jira] [Commented] (CASSANDRA-11427) Range slice queries CL > ONE trigger read-repair of purgable tombstones

["Stefan Podkowinski (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-11427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15217871#comment-15217871 ] 

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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)