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Posted to issues@kylin.apache.org by "hongbin ma (JIRA)" <ji...@apache.org> on 2017/11/02 07:29:00 UTC

[jira] [Resolved] (KYLIN-2982) Avoid upgrade column in OLAPTable

     [ https://issues.apache.org/jira/browse/KYLIN-2982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

hongbin ma resolved KYLIN-2982.
-------------------------------
    Resolution: Fixed
      Assignee: hongbin ma

> Avoid upgrade column in OLAPTable
> ---------------------------------
>
>                 Key: KYLIN-2982
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2982
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: hongbin ma
>            Assignee: hongbin ma
>            Priority: Normal
>             Fix For: v2.3.0
>
>
> before CALCITE-845, to avoid sum(integer_typed_col) to overflow, we worked around by upgrading all integer columns (which appearing in sum measure ) to bigint type. The workaround will change the column's type without notifying users, and will easily lead to code mess. 
> Now that CALCITE-845 is ready, we can use that to provide a cleaner impl



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