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https://issues.apache.org/jira/browse/HIVE-21344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16780214#comment-16780214
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Jesus Camacho Rodriguez commented on HIVE-21344:
------------------------------------------------

[~gopalv], {{getAllValidMaterializedViews}} should get the plans from the 
registry, but it still requires a call to metastore to verify that the 
materializations still exist, whether they are outdated or not, etc. That logic 
is in {{getValidMaterializedViews}}. Is that what you are seeing?

> CBO: Materialized view registry is not used for Calcite planner
> ---------------------------------------------------------------
>
>                 Key: HIVE-21344
>                 URL: https://issues.apache.org/jira/browse/HIVE-21344
>             Project: Hive
>          Issue Type: Bug
>          Components: Materialized views
>    Affects Versions: 4.0.0
>            Reporter: Gopal V
>            Priority: Major
>         Attachments: calcite-planner-after-fix.svg.zip, mv-get-from-remote.png
>
>
> {code}
> // This is not a rebuild, we retrieve all the materializations. In turn, we 
> do not need
>           // to force the materialization contents to be up-to-date, as this 
> is not a rebuild, and
>           // we apply the user parameters 
> (HIVE_MATERIALIZED_VIEW_REWRITING_TIME_WINDOW) instead.
>           materializations = 
> db.getAllValidMaterializedViews(getTablesUsed(basePlan), false, getTxnMgr());
>         }
> {code}
> !mv-get-from-remote.png!



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