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Posted to issues@kylin.apache.org by "kangkaisen (JIRA)" <ji...@apache.org> on 2016/12/12 03:14:58 UTC

[jira] [Closed] (KYLIN-2270) Reduce MR memory usage for global dict

     [ https://issues.apache.org/jira/browse/KYLIN-2270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

kangkaisen closed KYLIN-2270.
-----------------------------
    Resolution: Duplicate

> Reduce MR memory usage for global dict
> --------------------------------------
>
>                 Key: KYLIN-2270
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2270
>             Project: Kylin
>          Issue Type: Improvement
>    Affects Versions: v1.6.0
>            Reporter: kangkaisen
>            Assignee: kangkaisen
>
> currently, in {{Build Base Cuboid Data}}, if user use the global dict and the global dict size significantly larger the mapper memory size, the {{CachedTreeMap}} will load all values as much as possible and the soft references object will stick around for a while when GC, So which will make the {{Build Base Cuboid Data}}  mapper pause for a long time even could not  finish.



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