[jira] [Assigned] (KYLIN-1843) LRU cache for in memory dimensions

["Billy(Yiming) Liu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-1843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Billy(Yiming) Liu reassigned KYLIN-1843:
----------------------------------------

    Assignee: Billy(Yiming) Liu  (was: Yiming Liu)

> LRU cache for in memory dimensions
> ----------------------------------
>
>                 Key: KYLIN-1843
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1843
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Query Engine
>    Affects Versions: v1.2, v1.5.2
>            Reporter: Abhilash L L
>            Assignee: Billy(Yiming) Liu
>         Attachments: KYLIN-1843.patch
>
>
> The dimensions are kept in memory to fill up the result set.
> Now as and when more cubes are created, all the dimensions keep accumulating in the memory
> This means tomcat memory requirements always keep increasing
> It would help if less frequently used dimensions are swapped out to keep memory in check.
> We can have a Cache Manager which gets to decide which dimensions are kept in memory and brings in as and when its required. The size of the cache should be tuneable.



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