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Posted to issues-all@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2020/10/21 23:16:00 UTC
[jira] [Work started] (IMPALA-10252) Query returns less number of
rows with run-time filtering on integer column in a subquery against
functional_parquet schema
[ https://issues.apache.org/jira/browse/IMPALA-10252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on IMPALA-10252 started by Tim Armstrong.
----------------------------------------------
> Query returns less number of rows with run-time filtering on integer column in a subquery against functional_parquet schema
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: IMPALA-10252
> URL: https://issues.apache.org/jira/browse/IMPALA-10252
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Reporter: Qifan Chen
> Assignee: Tim Armstrong
> Priority: Blocker
> Labels: correctness
>
> During the work to address IMPALA-6628 (Use unqualified table references in .test files run from test_queries.py), it is found that a query against the functional_parquet database returns 1 row while the same query returns 12 rows when run-time filtering is turned off, or against the functional database.
>
>
> {code:java}
> Query: --SET RUNTIME_FILTER_MODE=OFF;
> select id, int_col, year, month
> from functional_parquet.alltypessmall s
> where s.int_col = (select count(*) from functional_parquet.alltypestiny t where s.id = t.id)
> order by id
> Query submitted at: 2020-10-18 12:41:15 (Coordinator: http://qifan-10229:25000)
> Query progress can be monitored at: http://qifan-10229:25000/query_plan?query_id=394a61d8f0002336:fd45e07300000000
> +----+---------+------+-------+
> | id | int_col | year | month |
> +----+---------+------+-------+
> | 1 | 1 | 2009 | 1 |
> +----+---------+------+-------+
> {code}
>
>
> {code:java}
> RUNTIME_FILTER_MODE set to OFF
> Query: select id, int_col, year, month
> from functional_parquet.alltypessmall s
> where s.int_col = (select count(*) from functional_parquet.alltypestiny t where s.id = t.id)
> order by id
> Query submitted at: 2020-10-18 12:40:58 (Coordinator: http://qifan-10229:25000)
> Query progress can be monitored at: http://qifan-10229:25000/query_plan?query_id=304c095f478607fc:7d2d03ff00000000
> +----+---------+------+-------+
> | id | int_col | year | month |
> +----+---------+------+-------+
> | 1 | 1 | 2009 | 1 |
> | 10 | 0 | 2009 | 1 |
> | 20 | 0 | 2009 | 1 |
> | 25 | 0 | 2009 | 2 |
> | 35 | 0 | 2009 | 2 |
> | 45 | 0 | 2009 | 2 |
> | 50 | 0 | 2009 | 3 |
> | 60 | 0 | 2009 | 3 |
> | 70 | 0 | 2009 | 3 |
> | 75 | 0 | 2009 | 4 |
> | 85 | 0 | 2009 | 4 |
> | 95 | 0 | 2009 | 4 |
> +----+---------+------+-------+{code}
>
> Query against functional database.
> {code:java}
> Query: select id, int_col, year, month
> from functional.alltypessmall s
> where s.int_col = (select count(*) from functional.alltypestiny t where s.id = t.id)
> order by id
> Query submitted at: 2020-10-18 12:35:24 (Coordinator: http://qifan-10229:25000)
> Query progress can be monitored at: http://qifan-10229:25000/query_plan?query_id=104bd5d7a6d5fe74:09a6c09000000000
> +----+---------+------+-------+
> | id | int_col | year | month |
> +----+---------+------+-------+
> | 1 | 1 | 2009 | 1 |
> | 10 | 0 | 2009 | 1 |
> | 20 | 0 | 2009 | 1 |
> | 25 | 0 | 2009 | 2 |
> | 35 | 0 | 2009 | 2 |
> | 45 | 0 | 2009 | 2 |
> | 50 | 0 | 2009 | 3 |
> | 60 | 0 | 2009 | 3 |
> | 70 | 0 | 2009 | 3 |
> | 75 | 0 | 2009 | 4 |
> | 85 | 0 | 2009 | 4 |
> | 95 | 0 | 2009 | 4 |
> +----+---------+------+-------+{code}
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