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https://issues.apache.org/jira/browse/HIVE-26160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krisztian Kasa resolved HIVE-26160.
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Resolution: Fixed
Pushed to master. Thanks [~zabetak] for review.
> Materialized View rewrite does not check tables scanned in sub-query
> expressions
> --------------------------------------------------------------------------------
>
> Key: HIVE-26160
> URL: https://issues.apache.org/jira/browse/HIVE-26160
> Project: Hive
> Issue Type: Bug
> Components: CBO, Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Materialized View rewrite based on exact sql text match uses the initial CBO
> plan to explore possibilities to change the query plan or part of the plan to
> an MV scan.
> This algorithm requires the tables scanned by the original query plan. If the
> query contains sub query expressions the tables scanned by the sub query are
> not listed which can lead to rewrite the original plan to scan an outdated MV.
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