[jira] [Commented] (CASSANDRA-5451) Add Paxos TTL setting

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13648404#comment-13648404 ] 

Sylvain Lebresne commented on CASSANDRA-5451:
---------------------------------------------

Just for the record, the only thing is that there is uses cases where a gcgs of 0 is actually a good idea (if you ttl everything in the CF typically). In that case, we'd end up never removing paxos state, which would be inefficient. And of course if someone uses a very short but non zero gcgs with the same reasoning it could be problematic.

Anyway, I'm fine not adding a new setting for now, but it would be worth at least mentioning in the NEWS file that there is a new use for gcgs and people needs to be aware of it. And/or, maybe we could set the paxos TTL to max(gcfs, 3 hours) or some other hard-coded but reasonable minimum?
                
> Add Paxos TTL setting
> ---------------------
>
>                 Key: CASSANDRA-5451
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5451
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: API, Core
>            Reporter: Jonathan Ellis
>            Priority: Minor
>


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