I find the PR in github and leave a comment. Here I copy the comments: I have doubt about the below scenario: For sort_columns, the minmax is ordered for all the blocks/blocklets in one segment.
Suppose that we are doing filtering on sort_columns and the filter looks like Col1='bb'. If the minmax values for blocklet#1, blocklet#2, blocklet#3 is [a,c), [c,d), [d,e). After carbondata find max value of blocklet#1 already covers filter value 'bb', Will it still compare filter value 'bb' with the minmax of the rest blocklets#2/#3? I though the BTree can be used to avoid these comparison. Am I wrong? -- Sent from: http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/
