[GitHub] [incubator-doris] jacktengg commented on issue #8984: [Discussion] Remove AlphaRowset Related Code

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

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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