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Posted to issues@kudu.apache.org by "Adar Dembo (Jira)" <ji...@apache.org> on 2019/10/11 04:50:00 UTC

[jira] [Created] (KUDU-2969) UDF support for scans

Adar Dembo created KUDU-2969:
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             Summary: UDF support for scans
                 Key: KUDU-2969
                 URL: https://issues.apache.org/jira/browse/KUDU-2969
             Project: Kudu
          Issue Type: Bug
          Components: tablet, tserver
    Affects Versions: 1.11.0
            Reporter: Adar Dembo


It would be nice if Kudu supported some form of user-defined functions (UDFs) for use in scans. These could be used for custom comparisons, or for comparisons between multiple columns (rather than between columns and constant values).

Impala supports [both Java-based and native UDFs|https://impala.apache.org/docs/build/html/topics/impala_udf.html]. We could explore doing something similar, or an approach with an IR like [Weld|https://www.weld.rs].




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