tree 160474caf54fc10cf22d421745cfcc5494141320
parent 0e5d5315e38edd4aa5dafc108f543acf049a804d
author JavierJia <jianfeng.jia@gmail.com> 1434596858 -0700
committer Yingyi Bu <buyingyi@gmail.com> 1434599114 -0700

VariableSizeFrame(VSizeFrame) support for Hyracks.

This patch replaced Frame/Accessor/Appender with the new API which
supports BigObject.
The ExternalSorter/TopKSorter/ExternalGroupSorter
have been implemented to support big object.

The Groupby && Join should work with BigObject also. But it will break the
memory budget when it encounter a big object. I will fix the memory
problem later in a separate CR.

The design about the frame allocation is
here:https://docs.google.com/presentation/d/15h9iQf5OYsgGZoQTbGHkj1yS2G9q2fd0s1lDAD1EJq0/edit?usp=sharing

Suggest review order:
Patch 12: It includes all of the sorting operators.
Patch 13: It applys the new IFrame API to all Hyracks codes.
Patch 14: Some bug fixes to pass all Asterix's tests.
Patch 15: Skip it!
Patch 16: Some bug fixes to the Asterix's tests in small frame setting.
Later Patch: address the comments

Change-Id: I2e08692078683f6f2cf17387e39037ad851fc05b
Reviewed-on: https://asterix-gerrit.ics.uci.edu/234
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>