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Posted to issues@hive.apache.org by "Thejas M Nair (JIRA)" <ji...@apache.org> on 2019/06/19 04:58:00 UTC

[jira] [Updated] (HIVE-21787) Metastore table cache LRU eviction

     [ https://issues.apache.org/jira/browse/HIVE-21787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thejas M Nair updated HIVE-21787:
---------------------------------
    Summary: Metastore table cache LRU eviction  (was: Metastore table cache enhancement)

> Metastore table cache LRU eviction
> ----------------------------------
>
>                 Key: HIVE-21787
>                 URL: https://issues.apache.org/jira/browse/HIVE-21787
>             Project: Hive
>          Issue Type: New Feature
>          Components: Standalone Metastore
>            Reporter: Sam An
>            Assignee: Sam An
>            Priority: Major
>         Attachments: HIVE-21787.1.patch, HIVE-21787.10.patch, HIVE-21787.2.patch, HIVE-21787.3.patch, HIVE-21787.4.patch, HIVE-21787.5.patch, HIVE-21787.6.patch, HIVE-21787.7.patch, HIVE-21787.8.patch, HIVE-21787.9.patch
>
>
> Metastore currently uses black/white list to specify patterns of tables to load into the cache. Cache is loaded in one shot "prewarm", and updated by a background thread. This is not a very efficient design. 
> In this feature, we try to enhance the cache for Tables with LRU to improve cache utilization.



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