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https://issues.apache.org/jira/browse/HBASE-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13483898#comment-13483898
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Hudson commented on HBASE-2406:
-------------------------------

Integrated in HBase-TRUNK #3484 (See 
[https://builds.apache.org/job/HBase-TRUNK/3484/])
    Remove a stale section citing issues w/ versions fixed by HBASE-2406 -- 
thanks to Sho Shimauchi for turning this one up (Revision 1401970)

     Result = FAILURE
stack : 
Files : 
* /hbase/trunk/src/docbkx/book.xml

                
> Define semantics of cell timestamps/versions
> --------------------------------------------
>
>                 Key: HBASE-2406
>                 URL: https://issues.apache.org/jira/browse/HBASE-2406
>             Project: HBase
>          Issue Type: Task
>          Components: documentation
>            Reporter: Todd Lipcon
>            Assignee: Pranav Khaitan
>            Priority: Critical
>             Fix For: 0.90.0
>
>         Attachments: 2406.txt, versions.html
>
>
> There is a lot of general confusion over the semantics of the cell timestamp. 
> In particular, a couple questions that often come up:
> - If multiple writes to a cell have the same timestamp, are all versions 
> maintained or just the last?
> - Is it OK to write cells in a non-increasing timestamp order?
> Let's discuss, figure out what semantics make sense, and then move towards 
> (a) documentation, (b) unit tests that prove we have those semantics.

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