Gopal V created HIVE-11035:
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Summary: PPD: Orc Split elimination fails because
filterColumns=[-1]
Key: HIVE-11035
URL: https://issues.apache.org/jira/browse/HIVE-11035
Project: Hive
Issue Type: Bug
Reporter: Gopal V
{code}
create temporary table xx (x int) stored as orc ;
insert into xx values (20),(200);
set hive.fetch.task.conversion=none;
select * from xx where x is null;
{code}
This should generate zero tasks after optional split elimination in the app
master, instead of generating the 1 task which for sure hits the row-index
filters and removes all rows anyway.
Right now, this runs 1 task for the stripe containing (min=20, max=200,
has_null=false), which is broken.
Instead, it returns YES_NO_NULL from the following default case
https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java#L976
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