yahoNanJing opened a new issue, #6910: URL: https://github.com/apache/datafusion/issues/6910
### Is your feature request related to a problem or challenge? When testing the TPCH q17 on my PC, based on #6800, it costs around 2.4s. Among them, it costs around 800ms for constructing the `RawTable` of `JoinHashMap`. To only find the hash location, the structure, `RawTable`, we used is too complex and the overhead is too heavy. ### Describe the solution you'd like We can simple use a fixed size of vector with a hash mask to look up the hash location. After applying the replacement, it only cost less than 100ms for the construction of `JoinHashMap`. And the overall time cost for the q17 is reduced from 2.4s to 1.8s. ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
