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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2016/07/07 03:34:11 UTC

[jira] [Commented] (KYLIN-1851) Imrpove build dictionary, consider that input is already sorted

    [ https://issues.apache.org/jira/browse/KYLIN-1851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365546#comment-15365546 ] 

Shaofeng SHI commented on KYLIN-1851:
-------------------------------------

If this enhancement is performed in a reducer, KYLIN-1178 will be solved together.

> Imrpove build dictionary, consider that input is already sorted
> ---------------------------------------------------------------
>
>                 Key: KYLIN-1851
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1851
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: liyang
>
> Currently dictionary build may encounter OOM when cardinality is huge. This can benefit from that the input (which is the output of FactDistinctColumn reducer) is already sorted.



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