chaoyli edited a comment on issue #2953: [segment_v2] Switch to Unified and Extensible Page Format URL: https://github.com/apache/incubator-doris/pull/2953#issuecomment-590018446 I have two question: 1. Bitmap index have save dict_column and bitmap with four page, every read have four I/O, this may be consuming. I think dict_column store a bitmap PagePointer will be better. Like this: **DictColumnValueIndex** : val -> dict_column_page_pointer **DictColumnPage** : dict_column|bitmap_page_pointer **BitmapPage** : RoaringBitMap which can save one I/O operation
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