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Posted to issues-all@impala.apache.org by "shajini thayasingh (Jira)" <ji...@apache.org> on 2020/04/24 21:15:00 UTC
[jira] [Commented] (IMPALA-9570) Document about memory management
for writing UDAFs
[ https://issues.apache.org/jira/browse/IMPALA-9570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091904#comment-17091904 ]
shajini thayasingh commented on IMPALA-9570:
--------------------------------------------
[~tarmstrong@cloudera.com]
links used in the cloudera doc for "{color:#de350b}uda-sample.h{color}" and "{color:#de350b}uda-sample.cc{color}" point to the github-cloudera page. Please see the screenshot below. In the Impala doc are we allowed to use the link I have shown here?
!image-2020-04-24-14-11-18-449.png|width=904,height=144!
> 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, image-2020-04-24-14-11-18-449.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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