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From "hongbin ma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KYLIN-2982) Avoid upgrade column in OLAPTable
Date Wed, 01 Nov 2017 13:38:01 GMT

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

hongbin ma updated KYLIN-2982:
------------------------------
    Fix Version/s: v2.3.0

> 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
>            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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