[jira] [Assigned] (HUDI-6828) After Insert overwrite into a non-empty partition/table with empty datasets, the subsequent query results are incorrect

["Jing Zhang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HUDI-6828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhang reassigned HUDI-6828:
--------------------------------

    Assignee: Jing Zhang

> After Insert overwrite into a non-empty partition/table with empty datasets, the subsequent query results are incorrect
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HUDI-6828
>                 URL: https://issues.apache.org/jira/browse/HUDI-6828
>             Project: Apache Hudi
>          Issue Type: Bug
>            Reporter: Jing Zhang
>            Assignee: Jing Zhang
>            Priority: Major
>
> After Insert overwrite into a non-empty partition/table with empty datasets, the subsequent query results are incorrect
> For example, current dataset of  partition dt=2021-07-17 is 
> ||id||name||dt||
> |1|'a'|'2021-07-17'|
>  
> Using the following SQL to overwrite partition dt=2021-07-17
> {code:java}
> insert overwrite table targetT partition(dt='2021-07-17') select id, name, price from sourceT where  dt=2021-07-17 and product='test'
> {code}
> If the input dataset is empty. We expect after insert overwrite, the partition of dt=2021-07-17 is empty.
> However, the query result is still the old data.



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