On Fri, Dec 11, 2015 at 8:34 AM, DuyHai Doan <doanduy...@gmail.com> wrote:

> The new UDF (User Defined Function) and UDA (User Defined Aggregate)
> introduced since Cassandra 2.2 is the feature to closest HBase co-processor.
>

Aren't "Prototype Triggers" (which probably no one should use) closer?

http://www.datastax.com/dev/blog/whats-new-in-cassandra-2-0-prototype-triggers-support

They still run on the coordinator, FWIW...

=Rob

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