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Posted to commits@cassandra.apache.org by "Aleksey Yeschenko (JIRA)" <ji...@apache.org> on 2014/01/05 04:21:51 UTC
[jira] [Commented] (CASSANDRA-6505) counters++ global shards 2.0
back port
[ https://issues.apache.org/jira/browse/CASSANDRA-6505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862484#comment-13862484 ]
Aleksey Yeschenko commented on CASSANDRA-6505:
----------------------------------------------
Also, now that I think of it, with CASSANDRA-6506 the 'all shards are global' optimization is not worth the extra complexity it adds. Going to remove it.
> 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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