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https://issues.apache.org/jira/browse/IMPALA-13859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dániel Gábor Vankó resolved IMPALA-13859.
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Target Version: Impala 5.0.0
Resolution: Fixed
> Add decimal to Kudu's supported primary key types
> -------------------------------------------------
>
> Key: IMPALA-13859
> URL: https://issues.apache.org/jira/browse/IMPALA-13859
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Reporter: Dániel Gábor Vankó
> Assignee: Dániel Gábor Vankó
> Priority: Major
> Labels: kudu
>
> Currently in our KuduUtil class [isSupportedKeyType(type)
> function|https://github.com/apache/impala/blob/8093c3fa6b44f7f6ec699d2dd47581401f75f363/fe/src/main/java/org/apache/impala/util/KuduUtil.java#L392-L395]
> returns false if its argument is decimal type. However, Apache Kudu only
> restricts double, float and bool columns to be primary keys:
> [https://kudu.apache.org/releases/1.17.0/docs/known_issues.html#_primary_keys]
> {quote}Columns with {{{}DOUBLE{}}}, {{{}FLOAT{}}}, or {{BOOL}} types are not
> allowed as part of a primary key definition.
> {quote}
> ([actually that's the case even in Kudu
> 1.0.0|https://kudu.apache.org/releases/1.0.0/docs/release_notes.html#_schema_and_usage_limitations])
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