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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4507) Create checkAndPut variant that exposes timestamp / UUID
Date Sat, 01 Oct 2011 04:00:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118653#comment-13118653
] 

stack commented on HBASE-4507:
------------------------------

Though... (bicycle ride between above comment and this)... its kinda lame our versioning can't
be used detecting a cell has been changed.  Our versioning has the above described hole where
an update that doesn't change the value goes undetected (without this hack applied).  This
is kinda lame.  Let me open an issue to address this.  This patch did some clog dancing to
ensure each edit had its own 'version' timestamp but has limitations (only one edit per ms
max).  Its like we need a edit sequence id per millisecond.  Let me open a new issue to address
this shortfall properly.
                
> Create checkAndPut variant that exposes timestamp / UUID
> --------------------------------------------------------
>
>                 Key: HBASE-4507
>                 URL: https://issues.apache.org/jira/browse/HBASE-4507
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Ted Yu
>            Assignee: stack
>
> Michael checked the checkAndPut which doesn't expose timestamp. A variant of checkAndPut
should be created to expose timestamp which is written into a column specified by additional
parameters.

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