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Posted to issues-all@impala.apache.org by "Tim Armstrong (JIRA)" <ji...@apache.org> on 2019/08/08 21:10:00 UTC

[jira] [Work started] (IMPALA-8848) Cardinality of UnionNode does not handle missing input cardinality correctly

     [ https://issues.apache.org/jira/browse/IMPALA-8848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on IMPALA-8848 started by Tim Armstrong.
---------------------------------------------
> Cardinality of UnionNode does not handle missing input cardinality correctly
> ----------------------------------------------------------------------------
>
>                 Key: IMPALA-8848
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8848
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Frontend
>    Affects Versions: Impala 3.3.0
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>            Priority: Critical
>              Labels: planner
>         Attachments: profile_4d48b2a3bb0236f1_bfa8157d00000000
>
>
> {noformat}
> |  35:UNION
> |  |  mem-estimate=0B mem-reservation=0B thread-reservation=0
> |  |  tuple-ids=82 row-size=28B cardinality=0
> |  |  in pipelines: 75(GETNEXT)
> |  |
> |  75:AGGREGATE [FINALIZE]
> |  |  output: sum:merge((((ws_ext_list_price - ws_ext_wholesale_cost - ws_ext_discount_amt) + ws_ext_sales_price) / 2))
> |  |  group by: c_customer_id, c_first_name, c_last_name, c_preferred_cust_flag, c_birth_country, c_login, c_email_address, d_year
> |  |  mem-estimate=128.00MB mem-reservation=34.00MB spill-buffer=2.00MB thread-reservation=0
> |  |  tuple-ids=81 row-size=104B cardinality=unavailable
> |  |  in pipelines: 75(GETNEXT), 36(OPEN)
> {noformat}
> I expect that the cardinality should be unavailable, not 0.



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