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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-6505) counters++ global shards 2.0 back port
Date Thu, 19 Dec 2013 02:08:07 GMT
Aleksey Yeschenko created CASSANDRA-6505:
--------------------------------------------

             Summary: 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: 2.0.4


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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