Parquet/parquet-mr — pull request #400 by AndreSchumacher (2014-05-25 10:33:39+00:00)
Title: Candidate fix for parquet-mr issue #371 (filtering on optional fields)

When filtering on optional fields the column filter should check whether a field is actually non-null. This fixes issue: https://github.com/Parquet/parquet-mr/issues/371