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https://issues.apache.org/jira/browse/IMPALA-9725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaomin Zhang updated IMPALA-9725:
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Attachment: wide.csv.gz
> LEFT ANTI JOIN produces wrong result when PHJ build spills
> ----------------------------------------------------------
>
> Key: IMPALA-9725
> URL: https://issues.apache.org/jira/browse/IMPALA-9725
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.4.0
> Reporter: Xiaomin Zhang
> Assignee: Tim Armstrong
> Priority: Blocker
> Labels: correctness
> Attachments: wide.csv.gz
>
>
> Using the attached data set, below query produced non-zero result when
> setting a small mem_limt. The expected result should be 0 because we are
> simply ANTI JOIN the same table.
> set mem_limit=100m;
> select id from wide_test.wide L1 where not exists (
> select 1 from wide_test.wide L2 where L1.id = L2.id
> and L1.col2 = L2.col2
> and L1.col3 = L2.col3
> and L1.col4 = L2.col4
> and L1.col5 = L2.col5
> and L1.col6 = L2.col6
> and L1.col7 = L2.col7
> and L1.col8 = L2.col8
> and L1.col9 = L2.col9
> and L1.col10 = L2.col10
> and L1.col11 = L2.col11
> and L1.col12 = L2.col12
> and L1.col13 = L2.col13
> and L1.col14 = L2.col14
> and L1.col15 = L2.col15
> and L1.col16 = L2.col16
> and L1.col17 = L2.col17
> and L1.col18 = L2.col18
> and L1.col19 = L2.col19
> and L1.col20 = L2.col20
> and L1.col21 = L2.col21
> and L1.col22 = L2.col22
> and L1.col23 = L2.col23
> ) order by id;
>
> With a larger mem_limit (or do not set mem_limit), above query return 0 which
> is correct.
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