[jira] [Commented] (HIVE-19154) Poll notification events to invalidate the results cache

["Jason Dere (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-19154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16432800#comment-16432800 ] 

Jason Dere commented on HIVE-19154:
-----------------------------------

RB at https://reviews.apache.org/r/66533/
[~thejas] [~gopalv] do you mind taking a look?

> Poll notification events to invalidate the results cache
> --------------------------------------------------------
>
>                 Key: HIVE-19154
>                 URL: https://issues.apache.org/jira/browse/HIVE-19154
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>            Priority: Major
>         Attachments: HIVE-19154.1.patch
>
>
> Related to the work for HIVE-18609. HIVE-18609 will only invalidate entries in the cache if that query looked up again, which could potentially leave a lot of undetected invalid entries in the cache taking up space which could cause other entries to be evicted. To remove these entries in a more timely fashion, have a background thread to periodically check the notification events for updates to the tables used in the results cache.



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