yujun777 opened a new pull request, #23320:
URL: https://github.com/apache/doris/pull/23320
## Proposed changes
Support alter colocate group's replica allocation.
1. SQL command: `ALTER COLOCATE GROUP full group name SET
("replication_allocation" = "...")`.
2. Here `full_group_name` is the full group name. If `group name` starts
with `__global__`, then full group name = `group name, otherwise full group
name = `dbId` + `_` + `group name`.
3. After alter group schema's replica allocations, also modify all the
group's related tables's propertities `default.replication_allocation` and
`dynamic.replication_allocation`, also modify all the table's existing
partitions's replica allocations;
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