Github user simafengyun commented on the issue:
https://github.com/apache/incubator-carbondata/pull/627
so binary search only fit the below casesï¼please comfirm thanks
1 the first dimension column ï¼ since it's logicl order are the same with
physical order in blocklet levelï¼so it does not need inverted index
2 for dimension column which has inverted index
question 1
if a dimension column is not the first colmn and in a blocklet it just has
the same order for both logical and physicalï¼will carbondata create inverted
index for it?
question 2
is there an easy way to identify whether a dimension column has
no_inverted_index property config by user in source code ï¼so it will be
helpful for me to add a condition to use binary search
thanks
å¨ 2017-03-07 18:35:05ï¼"Ravindra Pesala" <[email protected]>
åéï¼
@simafengyun you are right, default we sort the data but we can avoid
sorting using no_inverted_index property at tblproperties level. So if user
uses this configuration then we cannot do binary search always.
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