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>
2 files changed
tree: 7519bb738cbd3320b1bac7252f33236bf40c7e09
  1. .gitignore
  2. DISCLAIMER
  3. LICENSE
  4. NOTICE
  5. algebricks/
  6. hyracks/
  7. pom.xml
  8. src/