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https://issues.apache.org/jira/browse/CASSANDRA-8483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14246694#comment-14246694
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Aleksey Yeschenko commented on CASSANDRA-8483:
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You mean, with more isolation, not with isolation, right? Can't realistically
isolate a query over a large partition, or, worse, SELECT * FROM foo;
> Support streaming results
> -------------------------
>
> Key: CASSANDRA-8483
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8483
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Benedict
> Fix For: 3.0
>
>
> Currently we stream the number of rows back to the client before serializing,
> which means we need to know how many there are before doing so, which means
> materializing the entire resultset. We currently get around this with paging
> which attempts to restrict the amount of materialization done in any step,
> but supporting streaming entire result sets in one native transport "action"
> without materializing them all upfront would remove the need for paging in
> many cases, and would permit resultsets to be streamed _with isolation_,
> which most users probably don't realise is broken by paging.
> We can't use this change yet, but the sooner support for this is introduced
> to the protocol, the more likely it is clients will be able to make use of
> streaming reads once we're actually able to deliver them.
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