[GitHub] [arrow-datafusion] Dandandan opened a new issue #826: Use `RawTable` API in hash join code

[GitBox <gi...@apache.org>]

Dandandan opened a new issue #826:
URL: https://github.com/apache/arrow-datafusion/issues/826


   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   See the comment here.
   https://github.com/apache/arrow-datafusion/issues/790#issuecomment-893232614
   
   It looks to me like both the performance and complexity of the hash join code can be improved when using the raw table API instead of. 
   
   **Describe the solution you'd like**
   Rewrite the code to use the `RawTable` api. This should simplify the code and open up some opportunities to improve performance (faster collision checks(?)).
   
   https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=9157e7ae2ad4d84f8bd6c358c42722cb
   
   **Describe alternatives you've considered**
   Custom hashmap implementation. It seems to me that using the hashbrown API might result in less code and might be more performant in some cases.
   
   **Additional context**
   


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[GitHub] [arrow-datafusion] Dandandan closed issue #826: Use `RawTable` API in hash join code

[GitBox <gi...@apache.org>]

Dandandan closed issue #826:
URL: https://github.com/apache/arrow-datafusion/issues/826


   


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