David Radley commented on ATLAS-1155:

Googling around it seems that is is not good practice to create Scala empty 
lists in Java. The error I reported is reported by many jvms and I could not 
get rid of the error in an Eclipse environment. 

The patch I created is to introduce a second Scala constructor which defaults 
the last parameter to an empty list in Scala. I now call this new constructor 
when there are no rows.  

I also saw an error that required me to add a cast in this project- I have 
fixed that as well.    

> Errors in Eclipse when I bring in the latest code
> -------------------------------------------------
>                 Key: ATLAS-1155
>                 URL: https://issues.apache.org/jira/browse/ATLAS-1155
>             Project: Atlas
>          Issue Type: Bug
>    Affects Versions: 0.8-incubating
>            Reporter: David Radley
>            Assignee: David Radley
>             Fix For: 0.8-incubating
>         Attachments: atlas1155.patch
> I have brought the latest atlas code into an Eclipse environment and see an 
> error in GraphBackedDiscoveryService, 
> line 154
>  scala.collection.immutable.List.empty()); it says method empty is ambiguous.
> if I replace this expression with null it complies.

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