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From "Aleksey Yeschenko (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-6505) counters++ global shards 2.0 back port
Date Thu, 09 Jan 2014 17:34:53 GMT


Aleksey Yeschenko commented on CASSANDRA-6505:

Pushed, with the nits addressed and
lots of (unnecessary) changes reverted. You should be sleeping better with this version.

For the record - the changes in the original 6505 are there b/c I took the code more or less
directly from the 6504 branch. And it was created before CASSANDRA-6506 was in plans, so if
we were going to keep CounterContext, I wanted it to at least be decently rewritten.

> counters++ global shards 2.0 back port
> --------------------------------------
>                 Key: CASSANDRA-6505
>                 URL:
>             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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