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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6505) counters++ global shards 2.0 back port
Date Wed, 08 Jan 2014 20:24:50 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865850#comment-13865850
] 

Aleksey Yeschenko commented on CASSANDRA-6505:
----------------------------------------------

Will do one of those two (:

> counters++ global shards 2.0 back port
> --------------------------------------
>
>                 Key: CASSANDRA-6505
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6505
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Aleksey Yeschenko
>            Assignee: Aleksey Yeschenko
>             Fix For: 2.0.5
>
>
> CASSANDRA-6504 introduces a new type of shard - 'global' - to 2.1. To enable live upgrade
from 2.0 to 2.1, it's necessary that 2.0 nodes are able to understand the new 'global' shards
in the counter contexts.
> 2.0 nodes will not produce 'global' shards, but must contain the merge logic.
> It isn't a trivial code change ("non-trivial code in a non-trivial part of the code"),
hence this separate JIRA issue.



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