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https://issues.apache.org/jira/browse/HIVE-18259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-18259:
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Attachment: HIVE-18259.patch
> Automatic cleanup of invalidation cache for materialized views
> --------------------------------------------------------------
>
> Key: HIVE-18259
> URL: https://issues.apache.org/jira/browse/HIVE-18259
> Project: Hive
> Issue Type: Improvement
> Components: Materialized views
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Attachments: HIVE-18259.patch
>
>
> HIVE-14498 introduces the invalidation cache for materialized views, which
> keeps track of the transactions executed on a given table to infer whether
> materialized view contents are outdated or not.
> Currently, the cache keeps information of transactions in memory to guarantee
> quick response time, i.e., quick resolution about the view freshness, at
> query rewriting time. This information can grow large, thus we would like to
> run a thread that cleans useless transactions from the cache, i.e.,
> transactions that do invalidate any materialized view in the system, at an
> interval defined by a property.
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