[
https://issues.apache.org/jira/browse/HIVE-28126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Krisztian Kasa resolved HIVE-28126.
-----------------------------------
Fix Version/s: 4.1.0
Resolution: Fixed
Merged to master. Thanks [~dkuzmenko] and [~okumin] for review.
> Use added record count in cost model when rebuilding materialized view
> stored by iceberg
> -----------------------------------------------------------------------------------------
>
> Key: HIVE-28126
> URL: https://issues.apache.org/jira/browse/HIVE-28126
> Project: Hive
> Issue Type: Sub-task
> Components: Iceberg integration, Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0
>
>
> There is a cost based decision when rebuilding materialized views having
> aggregate.
> Currently the cost model has the total count of rows of source table however
> incremental rebuild plan scans only the rows inserted since the last MV
> rebuild.
> The goal is to update the row count in the cost model in case of Iceberg
> source tables with the sum of the {{added-records}} stored in snapshots
> summary since the last Mv rebuild.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
