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Posted to commits@cassandra.apache.org by "Ariel Weisberg (JIRA)" <ji...@apache.org> on 2018/09/01 01:48:00 UTC
[jira] [Commented] (CASSANDRA-14407) Transient Replication: Add
support for correct reads when transient replication is in use
[ https://issues.apache.org/jira/browse/CASSANDRA-14407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16599465#comment-16599465 ]
Ariel Weisberg commented on CASSANDRA-14407:
--------------------------------------------
Obviously +1 from me as I committed it.
> Transient Replication: Add support for correct reads when transient replication is in use
> -----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-14407
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14407
> Project: Cassandra
> Issue Type: Sub-task
> Components: Coordination
> Reporter: Ariel Weisberg
> Assignee: Blake Eggleston
> Priority: Major
> Fix For: 4.0
>
>
> Digest reads should never be sent to transient replicas.
> Mismatches with results from transient replicas shouldn't trigger read repair.
> Read repair should never attempt to repair a transient replica.
> Reads should always include at least one full replica. They should also prefer transient replicas where possible.
> Range scans must ensure the entire scanned range performs replica selection that satisfies the requirement that every range scanned includes one full replica.
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