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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2018/06/04 03:28:00 UTC
[jira] [Assigned] (KYLIN-3161) Enforce global dictionary for bitmap
count distinct column
[ https://issues.apache.org/jira/browse/KYLIN-3161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shaofeng SHI reassigned KYLIN-3161:
-----------------------------------
Assignee: Chao Long
> Enforce global dictionary for bitmap count distinct column
> ----------------------------------------------------------
>
> Key: KYLIN-3161
> URL: https://issues.apache.org/jira/browse/KYLIN-3161
> Project: Kylin
> Issue Type: Improvement
> Components: Measure - Count Distinct
> Reporter: Shaofeng SHI
> Assignee: Chao Long
> Priority: Major
> Fix For: v2.4.0
>
>
> For bitmap based count distinct column (as the data type is not int), a Global dictionary is required. But now user can use normal dictionary, which may cause incorrect result.
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