[jira] Resolved: (CASSANDRA-48) test-and-set

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-48?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-48.
-------------------------------------

    Resolution: Won't Fix

It seems clear that this is unworkable in cassandra core.

> test-and-set
> ------------
>
>                 Key: CASSANDRA-48
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-48
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>
> Atomic test-and-set insert operation would be nice: "set value to X but only if the current value is still Y."  This allows a sort of optimistic consistency: perform a GET, then perform test-and-set with the value of that GET as Y.
> I do not think that this requires strong consistency to be useful.

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