[jira] [Updated] (HUDI-5272) Align with Flink to support no_precombine in spark

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HUDI-5272?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HUDI-5272:
---------------------------------
    Labels: pull-request-available  (was: )

> Align with Flink to support no_precombine in spark
> --------------------------------------------------
>
>                 Key: HUDI-5272
>                 URL: https://issues.apache.org/jira/browse/HUDI-5272
>             Project: Apache Hudi
>          Issue Type: Improvement
>            Reporter: kazdy
>            Assignee: kazdy
>            Priority: Major
>              Labels: pull-request-available
>
> Flink supports {{public static final String NO_PRE_COMBINE = "no_precombine";}} (although not documented) for inserts and updates.
> This was Introduced by [#3874|https://github.com/apache/hudi/pull/3874].
> https://issues.apache.org/jira/browse/HUDI-2633
> {{When the precombine field is not specified, we use the proctime semantics, that means, the records come later are more fresh}}
> There's argument against it, because for updates records cannot be deduplicated properly. But at the same time Hudi allows us to use non-strict insert mode that breaks PK uniqueness.
> Users can make informed decision and handle duplicates on their own or bring in their own precombine logic with window functions etc before triggering hudi write.



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