wangbo opened a new pull request, #19443: URL: https://github.com/apache/doris/pull/19443
# Proposed changes When exec shared scan, multiple scanners visit freeblocks may cause performance bottleneck in tpch q17. So we need to split free blocks to reduce competition. # Key Design Introducing _scan_producer_group_num, it means the group num which shared variables of producer should divied into. For example, we pre-allocate 100 freeblocks, we should divide them to ```_scan_producer_group_num``` groups. ## Checklist(Required) * [ ] Does it affect the original behavior * [ ] Has unit tests been added * [ ] Has document been added or modified * [ ] Does it need to update dependencies * [ ] Is this PR support rollback (If NO, please explain WHY) ## Further comments If this is a relatively large or complex change, kick off the discussion at [d...@doris.apache.org](mailto:d...@doris.apache.org) 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. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
