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Posted to commits@cassandra.apache.org by "Sam Tunnicliffe (JIRA)" <ji...@apache.org> on 2016/05/03 18:39:13 UTC

[jira] [Commented] (CASSANDRA-8094) Heavy writes in RangeSlice read requests

    [ https://issues.apache.org/jira/browse/CASSANDRA-8094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15269018#comment-15269018 ] 

Sam Tunnicliffe commented on CASSANDRA-8094:
--------------------------------------------

Coming back to look at this now, I think that using {{extensions}} to persist the param is just too hacky to be considered a reasonable approach. Given that, we should either defer this ticket until 4.0 or prioritize CASSANDRA-11382, using this as a driver towards an implementation. 

> Heavy writes in RangeSlice read  requests 
> ------------------------------------------
>
>                 Key: CASSANDRA-8094
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8094
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Minh Do
>            Assignee: Sam Tunnicliffe
>              Labels: lhf
>             Fix For: 3.x
>
>
> RangeSlice requests always do a scheduled read repair when coordinators try to resolve replicas' responses no matter read_repair_chance is set or not.
> Because of this, in low writes and high reads clusters, there are very high write requests going on between nodes.  
> We should have an option to turn this off and this can be different than the read_repair_chance.



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