[GitHub] [incubator-doris] yangzhg opened a new issue #3895: `split_range` is not implemented in BetaRowset

[GitBox <gi...@apache.org>]

yangzhg opened a new issue #3895:
URL: https://github.com/apache/incubator-doris/issues/3895


   In `olap_scan_node.cpp` the  num of  scan thread is base on `split_ranges` and it is generated by function `split_range`. This function in `beta_rowset.cpp` is  simply return the all data as a single range, this cause the scan thread  num is less than alpha rowset. So in some case same query on  the beta rowset  is much slower than  on alpha rowset.
   So we need to implement `split_range` in  `beta_rowset.cpp` 
   
   


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