[jira] [Work logged] (HIVE-27187) Incremental rebuild of materialized view having aggregate and stored by iceberg

Wed, 29 Mar 2023 05:02:07 -0700 


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https://issues.apache.org/jira/browse/HIVE-27187?focusedWorklogId=853666&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-853666
 ]

ASF GitHub Bot logged work on HIVE-27187:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 29/Mar/23 12:01
            Start Date: 29/Mar/23 12:01
    Worklog Time Spent: 10m 
      Work Description: sonarcloud[bot] commented on PR #4166:
URL: https://github.com/apache/hive/pull/4166#issuecomment-1488471135

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 853666)
    Time Spent: 0.5h  (was: 20m)

> Incremental rebuild of materialized view having aggregate and stored by 
> iceberg
> -------------------------------------------------------------------------------
>
>                 Key: HIVE-27187
>                 URL: https://issues.apache.org/jira/browse/HIVE-27187
>             Project: Hive
>          Issue Type: Improvement
>          Components: Iceberg integration, Materialized views
>            Reporter: Krisztian Kasa
>            Assignee: Krisztian Kasa
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> Currently incremental rebuild of materialized view stored by iceberg which 
> definition query contains aggregate operator is transformed to an insert 
> overwrite statement which contains a union operator if the source tables 
> contains insert operations only. One branch of the union scans the view the 
> other produces the delta.
> This can be improved further: transform the statement to a multi insert 
> statement representing a merge statement to insert new aggregations and 
> update existing.



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