decster commented on pull request #3637: URL: https://github.com/apache/incubator-doris/pull/3637#issuecomment-631862702
> Hi @decster, Could you explain more about `MemSubTablet`? In your design doc you said this is for Multi Dimension Cluster. But I am not sure what it is. Basically it's a sub-partition of data in tablet, e.g. a (id, sex, city, uv, pv) tablet can sub-partition by sex&city, so filter about sex/city can only read a fraction of data, the effect is similar as sort+zonemap. I read about this in physical database design book chapter 8: https://hornad.fei.tuke.sk/~genci/Vyucba/SRBDp/Externisti/Zdroje/physical-database-design-the-database-professionals-guide-to-exploiting-indexes-views-storage-and-more.9780123693891.28944.pdf ---------------------------------------------------------------- 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: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
