Aleksey Yeschenko created CASSANDRA-6505:
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             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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