Add predicate pushdown using filter2 api#296

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danielcweeks wants to merge 7 commits intoapache:masterfrom

danielcweeks:pig-predicate-pushdown

Commits on Dec 1, 2015

Add predicate pushdown using filter2 api
Daniel Weeks
committed
update tests and logging
Daniel Weeks
committed
Fixed test to check the actual number of materialized rows from the reader
Daniel Weeks
committed

Commits on Dec 8, 2015

WIP: Handle a few error cases in Pig predicate pushdown.
rdblue
committed

Commits on Dec 16, 2015

Fixed binary type and storing filter predicate
Daniel Weeks
committed

Commits on Jan 4, 2016

Merge remote-tracking branch 'rdblue/pig-predicate-pushdown' into pig-predicate-pushdown
Daniel Weeks
committed
Cleaning up imports
Daniel Weeks
committed