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https://issues.apache.org/jira/browse/CASSANDRA-5184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13568495#comment-13568495
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Edward Capriolo commented on CASSANDRA-5184:
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We have been hacking at stuff like this for a while now on a side-project. Have
all types of operations like this, filters, server side union, hbase like
scanners in the works.
https://github.com/zznate/intravert-ug/wiki/Server-Side-JsonPath-example
Already works with CQL:
https://github.com/zznate/intravert-ug/wiki/CQL-Support
Still some work to be done.
> Support server side operations on evaluating queries
> ----------------------------------------------------
>
> Key: CASSANDRA-5184
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5184
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: T Jake Luciani
> Fix For: 2.0
>
>
> Now that CQL3 makes it simple to create a table within a traditional
> cassandra row
> there are many kind of simple operations we'd like to perform as a query is
> being evaluated. Since the query sticks to a single node and it is
> effectively a sequential scan.
> If we piggy back a small function to evaluate each matching column then we
> could implement things like timeseries filters and efficient versions of
> count() min() max() and sum()
> I wanted to open the door to further discussion.
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