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Posted to issues@hive.apache.org by "Zoltan Haindrich (Jira)" <ji...@apache.org> on 2019/09/17 08:18:00 UTC
[jira] [Assigned] (HIVE-22210) Incorrect results in some cases with
vectorization
[ https://issues.apache.org/jira/browse/HIVE-22210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zoltan Haindrich reassigned HIVE-22210:
---------------------------------------
> Incorrect results in some cases with vectorization
> --------------------------------------------------
>
> Key: HIVE-22210
> URL: https://issues.apache.org/jira/browse/HIVE-22210
> Project: Hive
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> running the following test with TestMiniLlapLocalCliDriver leads to an unexpected results; the coalesce calculated inside the subquery has a value of 1 instead of the correct(922) value.
> {code}
> drop table if exists u_table_4;
> create table u_table_4(smallint_col_22 smallint, int_col_5 int);
> insert into u_table_4 values(238,922);
> drop table u_table_7;
> create table u_table_7 ( bigint_col_3 bigint, int_col_10 int);
> insert into u_table_7 values (571,198);
> drop table u_table_19;
> create table u_table_19 (bigint_col_18 bigint ,int_col_19 int, STRING_COL_7 string);
> insert into u_table_19 values (922,5,'500');
> set hive.mapjoin.full.outer=true;
> set hive.auto.convert.join=true;
> set hive.query.results.cache.enabled=false;
> set hive.merge.nway.joins=true;
> set hive.vectorized.execution.enabled=true;
> --explain analyze
> SELECT
> a5.int_col,
> 922 as expected,
> COALESCE(a5.int_col, a5.aa) as expected2,
> a5.int_col_3 as reality
> FROM u_table_19 a1
> FULL OUTER JOIN
> (
> SELECT a2.int_col_5 AS int_col,
> a2.smallint_col_22 as aa,
> COALESCE(a2.int_col_5, a2.smallint_col_22) AS int_col_3
> FROM u_table_4 a2
> ) a5
> ON (
> a1.bigint_col_18) = (a5.int_col_3)
> INNER JOIN
> (
> SELECT a3.bigint_col_3 AS int_col,
> Cast (COALESCE(a3.bigint_col_3, a3.bigint_col_3, a3.int_col_10) AS BIGINT) * Cast (a3.bigint_col_3 AS BIGINT) AS int_col_3
> FROM u_table_7 a3
> WHERE bigint_col_3=571
> ) a4
> ON (a1.int_col_19=5)
> OR ((a5.int_col_3) IN (a4.int_col, 10))
> where
> a1.STRING_COL_7='500'
> ORDER BY int_col DESC nulls last limit 100
> ;
> {code}
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