Operator op = newLogicalPlan.getSinks().get(0);
LOFilter filter = (LOFilter)newLogicalPlan.getPredecessors(op).get(0);
PartitionFilterExtractor extractor = new PartitionFilterExtractor(
filter.getFilterPlan(), partitionCols);
extractor.visit();
Assert.assertFalse(extractor.canPushDown());
}
/**
* this loader is only used to test that parition column filters are given
* in the manner expected in terms of column names - hence it does not