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Posted to issues@paimon.apache.org by "MonsterChenzhuo (via GitHub)" <gi...@apache.org> on 2023/11/06 16:01:50 UTC

[I] [Feature] Strategically Engineering Wide Tables with Foreign Key-Based Joins [incubator-paimon]

MonsterChenzhuo opened a new issue, #2270:
URL: https://github.com/apache/incubator-paimon/issues/2270

   ### Search before asking
   
   - [X] I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar.
   
   
   ### Motivation
   
   When performing a join operation with Flink's dual stream join, there is an issue with excessive state storage. Flink Lookup Join only concerns itself with changes in the primary stream; changes in the dimension table cannot update data that has already been joined. With Partial Update association, there is a problem where the joined tables need to have a common primary key to ensure matching between two or more data sources. All the aforementioned solutions for generating wide tables through multi-table associations have their limitations.
   
   I would like to implement an entirely new method to overcome these shortcomings: a dynamic dimension table-driven Lookup Join, which I also refer to as 'ForeignKey Widening'.
   
   ### Solution
   
   _No response_
   
   ### Anything else?
   
   _No response_
   
   ### Are you willing to submit a PR?
   
   - [X] I'm willing to submit a PR!


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Re: [I] [Feature] Strategically Engineering Wide Tables with Foreign Key-Based Joins [incubator-paimon]

Posted by "qinjunjerry (via GitHub)" <gi...@apache.org>.
qinjunjerry commented on issue #2270:
URL: https://github.com/apache/incubator-paimon/issues/2270#issuecomment-2010733088

   Indeed amazing! Exactly what I am looking for :) 


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Re: [I] [Feature] Strategically Engineering Wide Tables with Foreign Key-Based Joins [incubator-paimon]

Posted by "polyzos (via GitHub)" <gi...@apache.org>.
polyzos commented on issue #2270:
URL: https://github.com/apache/incubator-paimon/issues/2270#issuecomment-2008185268

   @MonsterChenzhuo whats the status of this? It's a pretty amazing and useful feature


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