NotImplementedError on converting a list to sparkSQL

Hi,

First of all, this is an amazing library, cheers.

I was going through the spark example here -
http://odo.pydata.org/en/latest/spark.htm

This part went well:

from pyspark import SparkContext
sc = SparkContext()

from pyspark.sql import SQLContext
sql = SQLContext(sc)

from odo import odo
data = [('Alice', 300.0), ('Bob', 200.0), ('Donatello', -100.0)]
type(sql) #

However, trying to convert:
`srdd = odo(data, sql, dshape='3 * {name: string, amount: float64}')`

gave me a
`NotImplementedError: Don't know how to append datasets of type on to type `

Is this a known issue? If not, what further details should I provide aside from the exact error message?

Thanks,
Eli