Github user ravipesala commented on the issue:
https://github.com/apache/incubator-carbondata/pull/627
Yes, those are the 2 cases we can do binary search on dimension.
Regarding question1 , no it does not create inverted index if the data is
already sorted(naturally sorted).
Regarding question2, it is an issue pending from long time, it requires
changes from data writer and as well as data reader to update the sort state.
There are attributes like SortState and Encoders in DataChunk of format
needs to updated properly while writing and get them back while reading to know
the dimension has inverted_index or not, or it is naturally sorted or not.
My suggestion is don't change the method of `setFilterdIndexToBitSet` as
the old logic is required for no_inverted index and non sorted columns. Update
the the method `setFilterdIndexToBitSetWithColumnIndex` with your range search.
To know the dimension is naturally sorted or not we can add another PR to
update the read/write logic.
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