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Posted to issues-all@impala.apache.org by "Kris Hahn (Jira)" <ji...@apache.org> on 2020/04/23 23:22:00 UTC

[jira] [Assigned] (IMPALA-9570) Document about memory management for writing UDAFs

     [ https://issues.apache.org/jira/browse/IMPALA-9570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kris Hahn reassigned IMPALA-9570:
---------------------------------

    Assignee: shajini thayasingh  (was: Kris Hahn)

> Document about memory management for writing UDAFs
> --------------------------------------------------
>
>                 Key: IMPALA-9570
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9570
>             Project: IMPALA
>          Issue Type: Documentation
>            Reporter: Quanlong Huang
>            Assignee: shajini thayasingh
>            Priority: Major
>         Attachments: apache doc.png, cloudera doc.png
>
>
> In the current document, we have few words about memory management for writing UDAFs: [https://impala.apache.org/docs/build/html/topics/impala_udf.html]
> The only related sentense is "A serialize function that ... frees any memory allocated during the init, update, and merge phases."
> We can add more for clarifying it or add this link for further reading: [https://github.com/apache/impala/blob/2f53783b14ddf215a4c96bc52a511d3a83896128/be/src/udf/udf.h#L358-L365]
> BTW, the links of uda-sample.h and uda-sample.cc are not shown:
> [http://impala.apache.org/docs/build/html/topics/impala_udf.html#uda_functions]
> !apache doc.png|width=326,height=109!
> They are normal in Cloudera's doc: 
> [https://docs.cloudera.com/documentation/enterprise/latest/topics/impala_udf.html#uda_functions]
> !cloudera doc.png|width=725,height=226!



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