Sergey Shelukhin created HIVE-8654:
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Summary: CBO: parquet_ctas test returns incorrect results
Key: HIVE-8654
URL: https://issues.apache.org/jira/browse/HIVE-8654
Project: Hive
Issue Type: Sub-task
Reporter: Sergey Shelukhin
Assignee: Sergey Shelukhin
I am investigating right now.
The issue is specific to Parquet:
{noformat}
set hive.cbo.enable=true;
drop table staging;
drop table parquet_ctas;
create table staging (key int, value string) stored as textfile;
insert into table staging select * from src order by key limit 10;
select * from staging;
create table parquet_ctas stored as parquet as select * from staging;
select * from parquet_ctas;
create table orc_ctas stored as orc as select * from staging;
select * from orc_ctas;
create table txt_ctas stored as textfile as select * from staging;
select * from txt_ctas;
{noformat}
The parquet query returns all NULLs with CBO on.
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