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From "Kelvin Kakugawa (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1546) (Yet another) approach to counting
Date Mon, 04 Oct 2010 02:52:35 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917450#action_12917450
] 

Kelvin Kakugawa commented on CASSANDRA-1546:
--------------------------------------------

Sylvain,

You're right that there is a problem w/ AE repair.  Last time I read the 0.7 code, AE repair
works like so:
1) stream (selected subsections) of the SST's data file to the target replica,
2) rebuild the index and filter files on the target.

However, in #1072, we account for this by rebuilding the whole SST from the streamed SST data
file.  In order to go through the counter-specific deserialization code path.

As for deletes, #1546 follows the same abstract model as #1072, so you're right that the situation
is the same.

I'm about to take a deep dive through your patch.  Thank you for thinking about partitioned
counters.

> (Yet another) approach to counting
> ----------------------------------
>
>                 Key: CASSANDRA-1546
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1546
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.7.0
>
>         Attachments: 0001-Remove-IClock-from-internals.patch, 0002-Counters.patch, 0003-Generated-thrift-files-changes.patch
>
>
> This could be described as a mix between CASSANDRA-1072 without clocks and CASSANDRA-1421.
> More details in the comment below.

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