xinghuayu007 opened a new pull request #5104: URL: https://github.com/apache/incubator-doris/pull/5104
## Proposed changes When two cholocate tables make `join` operation, to make `join` operation locally, the tablet belongs to the same bucket sequence will be distributed to the same host. When chosing which host for a bucket sequence, it takes random strategy. Random strategy can not make query task load balance logically for one query. Therefore, this patch takes round-robin strategy, make buckets distributed evenly. For example, if there are 6 bucket sequences and 3 hosts, it is better to distributed 2 buket sequence for every host. ## Types of changes What types of changes does your code introduce to Doris? _Put an `x` in the boxes that apply_ - [] Bugfix (non-breaking change which fixes an issue) - [] New feature (non-breaking change which adds functionality) - [x] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [] Documentation Update (if none of the other choices apply) - [] Code refactor (Modify the code structure, format the code, etc...) ## Checklist _Put an `x` in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code._ - [] I have create an issue on (Fix #ISSUE), and have described the bug/feature there in detail - [x] Compiling and unit tests pass locally with my changes - [x] I have added tests that prove my fix is effective or that my feature works - [x] If this change need a document change, I have updated the document - [x] Any dependent changes have been merged ## Further comments If this is a relatively large or complex change, kick off the discussion at [email protected] by explaining why you chose the solution you did and what alternatives you considered, etc... ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
