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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1546) (Yet another) approach to counting
Date Thu, 21 Oct 2010 19:48:41 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923606#action_12923606
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Stu Hood commented on CASSANDRA-1546:
-------------------------------------

If you end up with LCC/CCs for 4 different participating nodes when your replication factor
is only 3, it seems like there is bound to be a deterministic approach to incorporating the
4th LCC. My understanding is slim, but at read time, if one of the member LCCs has completely
disappeared from gossip (and responsibility), then you can deterministically choose one of
the remaining nodes to incorporate the counts, right?

> (Yet another) approach to counting
> ----------------------------------
>
>                 Key: CASSANDRA-1546
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1546
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.7.1
>
>         Attachments: 0001-v2-Remove-IClock-from-internals.patch, 0001-v3-Remove-IClock-from-internals.txt,
0001-v4-Counters.patch, 0002-v2-Counters.patch, 0002-v3-Counters.txt, 0002-v4-thrift-changes.patch,
0003-v2-Thrift-changes.patch, 0003-v3-Thrift-changes.txt, marker_idea.txt
>
>
> This could be described as a mix between CASSANDRA-1072 without clocks and CASSANDRA-1421.
> More details in the comment below.

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