add global aggregator support

git-svn-id: https://hyracks.googlecode.com/svn/branches/fullstack_staging@2066 123451ca-8445-de46-9d55-352943316053
14 files changed
tree: 04616333047859ecb8dd0bc89ea0d0d846f9ad31
  1. algebricks/
  2. hyracks/
  3. pom.xml
  4. pregelix/