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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-4775) Counters 2.0
Date Mon, 08 Jul 2013 14:35:57 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13702029#comment-13702029
] 

Jonathan Ellis edited comment on CASSANDRA-4775 at 7/8/13 2:34 PM:
-------------------------------------------------------------------

bq. that problem is not inherent to counters 1.0

You'll have to explain that for me in small words, then -- I don't see how moving to lock-and-read-before-write
allows us to safely replay the same commitlog segment twice, for instance.
                
      was (Author: jbellis):
    bq. that problem is not inherent to counters 1.0

You'll have to explain that for me in small words, then -- I don't see how moving to explicit
read-before-write allows us to safely replay the same commitlog segment twice, for instance.
                  
> Counters 2.0
> ------------
>
>                 Key: CASSANDRA-4775
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4775
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Arya Goudarzi
>            Assignee: Aleksey Yeschenko
>              Labels: counters
>             Fix For: 2.1
>
>
> The existing partitioned counters remain a source of frustration for most users almost
two years after being introduced.  The remaining problems are inherent in the design, not
something that can be fixed given enough time/eyeballs.
> Ideally a solution would give us
> - similar performance
> - less special cases in the code
> - potential for a retry mechanism

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