tree 7519bb738cbd3320b1bac7252f33236bf40c7e09
parent a672f4421761f27b8b9f3974855c40bc70e76a52
author Yingyi Bu <yingyi@couchbase.com> 1457054191 -0800
committer Yingyi Bu <buyingyi@gmail.com> 1457055462 -0800

ASTERIXDB-1330: fix NPE in ExternalGroupByOperator.

Change-Id: I2279221abbef1440179a31df180a24f6a642c641
Reviewed-on: https://asterix-gerrit.ics.uci.edu/687
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@apache.org>