Krisztian Kasa created HIVE-27187: ------------------------------------- Summary: Incremental rebuild of materialized view 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
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. -- This message was sent by Atlassian Jira (v8.20.10#820010)