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https://issues.apache.org/jira/browse/CASSANDRA-7919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14132501#comment-14132501
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Benedict commented on CASSANDRA-7919:
-------------------------------------

I'm also a little uncomfortable making it explicitly a TimeUUID at the client 
level, since this may mean clients start expecting the exact TimeUUID back with 
each request also. This would definitely be a bad thing, and prevent almost all 
of the timestamp optimisation work we have pencilled for 3.0, as we would have 
to retain its full bytes forever, which are half random, the state space of 
which will grow linearly with cluster up-time.

> Change timestamp representation to timeuuid
> -------------------------------------------
>
>                 Key: CASSANDRA-7919
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7919
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: T Jake Luciani
>            Priority: Minor
>             Fix For: 3.0
>
>
> In order to overcome some of the issues with timestamps (CASSANDRA-6123) we 
> need to migrate to a better timestamp representation for cells.
> Since drivers already support timeuuid it makes sense to migrate to this 
> internally (see CASSANDRA-7056)



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