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https://issues.apache.org/jira/browse/CASSANDRA-4918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-4918:
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Attachment: 4918.txt
Trivial patch attached
> Remove CQL3 arbitrary select limit
> ----------------------------------
>
> Key: CASSANDRA-4918
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4918
> Project: Cassandra
> Issue Type: Bug
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Fix For: 1.2.0
>
> Attachments: 4918.txt
>
>
> Let it be clear however that until CASSANDRA-4415 is resolved, it will put us
> in a situation where it will be easy to write queries that timeout (and
> potentially OOM the server). That being said, even with the auto-limit it's
> not too hard to write queries that timeout if you're not at least a bit
> careful and so far we've always answer that by saying 'you have to be mindful
> of how much data your query is asking for'. And while I'm all for adding
> protection against OOMing the server like suggested by Jonathan on
> CASSANDRA-4304, I think the arbitrary auto-limit is the worst possible
> solution to this problem.
> Note that until CASSANDRA-4415 is resolved I wouldn't be totally opposed to
> force people to provide a LIMIT to select queries if we're really thing it
> will avoids lots of surprise, though tbh I do think it would be enough to
> just continue to be vocal about the fact that 'you have to be mindful of how
> much data your query is asking for' and its follow-up 'you should use an
> explicit LIMIT if in doubt about how much data will be returned'.
> But I am *strongly opposed* in keeping the current arbitrary limit because it
> makes very little sense imo, and the little sense it makes will completely
> vanish once CASSANDRA-4415 is here, and I don't want to break the API and do
> a CQL4 to be able to remove that limit later.
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