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https://issues.apache.org/jira/browse/CASSANDRA-7919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14132512#comment-14132512
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Jonathan Ellis commented on CASSANDRA-7919:
-------------------------------------------

bq. we need guaranteed uniqueness cross-cluster, which timeuuids only achieve 
if created server side

I don't follow.  The advantage of UUID is precisely that we don't need 
server-side coordination to achieve global uniqueness.

> 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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