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Improve FDB architecture documentation related to cluster recruitment (#8012) 

Description

Improve FDB architecture documentation to explicitly mention that
Stateless processes may get recruited on a single cluster process

Testing
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Ata E Husain Bohra 2022-08-29 09:24:13 -07:00 committed by GitHub
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documentation/sphinx/source/architecture.rst
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@ -14,8 +14,12 @@ Detailed FoundationDB Architecture
The FoundationDB architecture chooses a decoupled design, where The FoundationDB architecture chooses a decoupled design, where
processes are assigned different heterogeneous roles (e.g., processes are assigned different heterogeneous roles (e.g.,
Coordinators, Storage Servers, Master). Scaling the database is achieved Coordinators, Storage Servers, Master). Cluster attempts to recruit
by horizontally expanding the number of processes for separate roles: different roles as separate processes, however, it is possible that
multiple Stateless roles gets colocated (recruited) on a single
process to meet the cluster recruitment goals. Scaling the database
is achieved by horizontally expanding the number of processes for
separate roles:
Coordinators Coordinators
~~~~~~~~~~~~ ~~~~~~~~~~~~