How to use Scala defined function in Cassandra interpreter on Zeppelin Notebook? -

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i have next function defined on zeppelin notebook:

import java.util.date  def timeformat(d: long) : string = {     val l = (d * 1000).tolong     val time = new date(l)     time.tostring() }

using single item:

timeformat(1471887281116l) res2: string = thu apr 02 10:05:16 utc 48612

and want format timestamps cassandra using:

%cassandra select timeformat(timestamp) time keyspace.table;

without function query return result output is:

com.datastax.driver.core.exceptions.invalidqueryexception:     unknown function 'timeformat'

in zeppelin tutorial, shows how get , format data using functions, concretely registering function with:

sqlc.udf.register("functionname", functionname _)

which allows access %sql interpreter, wonder how on %cassandra interpreter.


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