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Date: Fri, 2 Nov 2012 20:56:12 +0000 (UTC)
From: "Lars Hofhansl (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-4583) Integrate RWCC with Append and
 Increment operations
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    [ https://issues.apache.org/jira/browse/HBASE-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489743#comment-13489743 ] 

Lars Hofhansl commented on HBASE-4583:
--------------------------------------

The logic in upsert could be changed to also count the number of versions (in addition to versions older than then the current readpoint) and then consider both counts before removing KVs. That way we get the current upsert logic (if you set VERSIONS => 1 for the CF) and also keep at least as many versions as declared in the CF.
That's for another jira, though.

OK. Any opposition to committing the "less radical" version to 0.96?

                
> Integrate RWCC with Append and Increment operations
> ---------------------------------------------------
>
>                 Key: HBASE-4583
>                 URL: https://issues.apache.org/jira/browse/HBASE-4583
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.96.0
>
>         Attachments: 4583-trunk-less-radical.txt, 4583-trunk-less-radical-v2.txt, 4583-trunk-less-radical-v3.txt, 4583-trunk-less-radical-v4.txt, 4583-trunk-less-radical-v5.txt, 4583-trunk-less-radical-v6.txt, 4583-trunk-radical.txt, 4583-trunk-radical_v2.txt, 4583-trunk-v3.txt, 4583.txt, 4583-v2.txt, 4583-v3.txt, 4583-v4.txt
>
>
> Currently Increment and Append operations do not work with RWCC and hence a client could see the results of multiple such operation mixed in the same Get/Scan.
> The semantics might be a bit more interesting here as upsert adds and removes to and from the memstore.

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