[jira] [Assigned] (HIVE-18259) Automatic cleanup of invalidation cache for materialized views

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-18259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez reassigned HIVE-18259:
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> 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
>
> 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views, which keeps track of the transactions executed on a given table to infer whether materialized view contents are outdated or not.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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