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https://issues.apache.org/jira/browse/CASSANDRA-8453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14241118#comment-14241118
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Jacques-Henri Berthemet commented on CASSANDRA-8453:
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Do you know which class receives/sends the replication messages from other DCs?
> Ability to override TTL on different data-centers, plus one-way replication
> ---------------------------------------------------------------------------
>
> Key: CASSANDRA-8453
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8453
> Project: Cassandra
> Issue Type: Wish
> Components: Core
> Reporter: Jacques-Henri Berthemet
>
> Here is my scenario:
> I want to have one datacenter specialized for operations "DCO" and another
> for historical/audit "DCH". Replication will be used between DCO and DCH.
> When TTL expires on DCO and data is deleted I'd like the data on DCH to be
> kept for other purposes. Ideally a different TTL could be set in DCH.
> I guess this also implies that replication should be done only in DCO => DCH
> direction so that data is not re-created. But that's secondary, DCH data is
> not meant to be modified.
> Is this kind of feature feasible for future versions of Cassandra? If not,
> would you have some pointers to modify Cassandra in order to achieve this
> functionality?
> Thank you.
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