SparkSQL returns ArrayBuffer for fields of type Array

[Du Li]

Hi, Michael.

I used HiveContext to create a table with a field of type Array. However, in 
the hql results, this field was returned as type ArrayBuffer which is mutable. 
Would it make more sense to be an Array?

The Spark version of my test is 1.0.2. I haven’t tested it on SQLContext nor 
newer version of Spark yet.

Thanks,
Du