Github user akashrn5 commented on the issue:
https://github.com/apache/carbondata/pull/2886
@kevinjmh
1. when you set in INVERTED_INDEX , but not in SORT_COLUMNS, then data will
not be sorted, only RLE will be applied on data.
2. `isInvertedIndex ` basically this boolean cannot say that, it is do RLE,
basically RLE will be applied on both inverted and no inverted case, but after
checking `isInvertedIndex ` it decides to sort based on isSort check---
