Hi Xuchuanyin, Thanks for asking the doubt.
Consider the following example where we have 2 segments: Seg_0 : R1(0-100), R2(100-200), R3(200-300) Seg_1 : R4(0-50), R5(150-250), R6(250-350) Now the new ranges formed after merging all the overlapping ranges for both the segments will be: R1(0-100) & R2(100-350). Now these two have been formed as new ranges, but we can further divide these ranges into smaller ranges based on their sizes to be distributed into different tasks. More explanation will be given in design document for other cases. Thanks. -- Sent from: http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/
