jacktengg commented on issue #8984:
URL: 
https://github.com/apache/incubator-doris/issues/8984#issuecomment-1147162820

   Code of AlphaRowset  is going to be abolished :
   - Apache Doris has set the default rowset to BetaRowset in version 0.15 for 
about half a year.
   - In version 1.0.0, we released a vectorized execution engine, in which the 
storage vectorization is only designed and modified for BetaRowset, so the old 
AlphaRowset will not enjoy the huge performance improvement brought by 
vectorization, and we have no plans to do vectorization-related optimizations 
for AlphaRowset in the future. 
   - In version 1.1, users will be prohibited from creating AlphaRowset tables. 
Existing tables can be automatically converted to beta rowset if there are 
alpha rowsets.
   - We will completely remove the AlphaRowset related code in version 1.2, so 
that the storage side of Doris can iterate quickly. For the existing 
AlphaRowset table, we provide the following methods for data conversion in 1.1:
   
   1. Check whether the alpha rowset exists on all current BEs, use the 
following SQL: `admin show tablet storage format`
   2. If there is an alpha rowset on the BE, add the 
`convert_rowset_thread_num` configuration item in the BE configuration file. 
After restarting the BE, the BE will automatically convert the alpha rowset to 
beta rowset.


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