Result change in nest_aggregate.3.query.aql with Hyracks rev. c6d9386c

A result from one of the execution tests has changed with Asterix running under 
the latest Hyracks master, c6d9386c. This revision of Asterix  master(f74fe77e) 
does not fail this execution test under the last Hyracks revision 396c18bc 

nest_aggregate.3.query.aql has expected result:
 " { "nation_key": 2, "name": "BRAZIL", "aggregates": [  ] } " 
However the current result is:
 { "nation_key": 2, "name": "BRAZIL", "aggregates": [ { "order_date": "1993-03-05", "sum_price": 8225.96d }, { "order_date": "1994-08-31", "sum_price": 19056.99d }, { "order_date": "1997-05-04", "sum_price": 23984.88d } ] }"

Is the new result on top of Hyracks c6d9386c actually correct? Or is this a 
regression?

Thanks goes to Sattam for discovering this was present in master

Original issue reported on code.google.com by ima...@uci.edu on 26 Jun 2014 at 8:49

namhnguyen / asterixdb

Result change in nest_aggregate.3.query.aql with Hyracks rev. c6d9386c #787