reduced communication during result distribution
- when reporting the location of results, the NCs also report if the
  result partition is empty
- the client does not try to read empty partitions
better toString() for subclasses of AbstractWork

Change-Id: Ia39f657e689ea305d49d55bd27c9a512e1ff970f
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/39
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>
25 files changed
tree: 0957e1f139959278ea78dd73317651f0e7969952
  1. .gitignore
  2. algebricks/
  3. hivesterix/
  4. hyracks/
  5. pom.xml
  6. pregelix/