[jira] [Commented] (CASSANDRA-5355) Collection values size is not validated.

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

    [ https://issues.apache.org/jira/browse/CASSANDRA-5355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605007#comment-13605007 ] 

Sylvain Lebresne commented on CASSANDRA-5355:
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I note that 64k might sound arbitrary low and we might want to lift the limitation. However, as said above, for sets elements we are constrained by the current internal column name size. We could of course lift that limitation, but it's not trivial. Of course, we could lift the limitation only for map and list values, but even that would unfortunately break the current format currently used to send collections to the client, so at a minimum it would require a binary protocol version bump.
                
> Collection values size is not validated.
> ----------------------------------------
>
>                 Key: CASSANDRA-5355
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5355
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>
> Collections values are currently limited to 64K because the serialized form used uses shorts to encode the elements length (and for sets elements and key map, because they are part of the internal column name that is itself limited to 64K).
> However, there is no check on the collection elements size currently so we don't refuse values > 64K (except for sets elements and map keys because we check internal column name sizes), even though they can't be decoded correctly client side.

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