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Posted to issues@kudu.apache.org by "wangningito (Jira)" <ji...@apache.org> on 2021/02/25 16:00:05 UTC

[jira] [Commented] (KUDU-3251) Support atomic append on a string field or increment of an int field

    [ https://issues.apache.org/jira/browse/KUDU-3251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291012#comment-17291012 ] 

wangningito commented on KUDU-3251:
-----------------------------------

[https://docs.google.com/document/d/15ArAJ7LobWYYiylwnhfxXdVBn9r07PCHDLllBnC9rB4/] 

Here I attach some my think towards this.

> Support atomic append on a string field or increment of an int field
> --------------------------------------------------------------------
>
>                 Key: KUDU-3251
>                 URL: https://issues.apache.org/jira/browse/KUDU-3251
>             Project: Kudu
>          Issue Type: New Feature
>            Reporter: wangningito
>            Priority: Minor
>
> For some scenarios, the user may only want increase/decrease the for numeric field, or append a suffix to string field.
> Currently, it could be implemented with application. 
>  # load data with scan
>  # apply increment/decrement in memory
>  # send a increased/decreased value to server with updateRpc.
> Despite the poor performance, it also would make result error when multiple process/threads is doing ingestion. 
> Introduce this may make some thing easier.



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