...

the detailed design of the function.

Scheduling

1. add check and convert before 1.1
   1. add the stmt to detect alpharowset tables in version 1.1

...

1. 2. we also can add a configuration to control whether to
      automatically compaction alpha rowset tables to betarowset format
   3. before 1.1

...

1. 1. upgrade to 1.2 users need to convert all tables in the cluster to
      betarowset,

...

2. remove alpha rowset related code in 1.2 version