Major changes:
- Based on Yingyi's review comments, the new interface is written to have the frame output logic out of the aggregators.
- Added methods for better management of the size of aggregation states. Now aggregator developer can decide the memory size to be used, and the groupers will assign the memory/frame spaces based on these information.
- Fixed some bugs in multiple-field aggregator.
git-svn-id: https://hyracks.googlecode.com/svn/branches/aggregators_dev_next@971 123451ca-8445-de46-9d55-352943316053
16 files changed