deemoliu opened a new pull request, #10927: URL: https://github.com/apache/pinot/pull/10927
`refactor`: POC for improving disk read for partial upsert handler - The current Partial upsert handler read all columns of prev and new value. - To reduce num of column read, refactored the interface for overwrite merger as default merger. It will only access the following two types 1. previous value is not null, new value is null, we will replace the new value with the previous value 2. previous value is not null, mergers is not overwrite, we will merger the previous value and the new value. 3. For all the other cases, we will not read the previous value. - Created this PR to learn and gather feedback. -- 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: commits-unsubscr...@pinot.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
