XiangpengHao commented on issue #9403: URL: https://github.com/apache/datafusion/issues/9403#issuecomment-2231064706
One crazy idea I've been thinking: if the string view is loaded from dictionary-encoded parquet, then the underlying buffers are unique (i.e., no duplicated values), then the view values are essentially the hash of the string -> if two strings are the same, the share the same view value; if they are different, they must have different view values. Then we can just pass the view array to the arrow-row converter instead of the potentially large `StringViewArray`. I'm not sure how fast we can get from this, my guess is that the performance gain may not justify the changes it requires. -- 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: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
