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https://issues.apache.org/jira/browse/JAMES-1876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tellier Benoit resolved JAMES-1876.
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Resolution: Fixed
Merged a few weeks ago
> Remove useless index on Cassandra subscriptions
> -----------------------------------------------
>
> Key: JAMES-1876
> URL: https://issues.apache.org/jira/browse/JAMES-1876
> Project: James Server
> Issue Type: Bug
> Reporter: Tellier Benoit
>
> Subscriptions are accessed by user and optionally by Mailbox
> Mailbox name is used as partition key.
> Hence, an Index is needed for retrieving a user subscription.
> - This is ineficient : we could directly use user as primary key, and
> mailbox as a clustering key, thus not requiring additional indexes.
> - This brakes scalability : several users can register relative path, and
> let's say there INBOX. Hence, data and load distribution is then broken.
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