[2pt] feedback: Developer’s guide | Tarantool

Product: Cartridge
Root document: https://www.tarantool.io/en/doc/latest/book/cartridge/cartridge_dev/#stateful-failover
SME: @ sergos
Peer reviewer: @

<…>tained from the state provider with the
long polling technique.
|All decisions are made by the coordinator – the one that holds the
lock. The coordinator is implemented as a built-in Cartridge role. There may
be many instances with the coordinator role enabled, but only one of
them can acquire the lock at the same time. We call this coordinator the “active”
one.
|The lock is released automatically when the TCP connection is cl<…>

Details

https://www.tarantool.io/en/doc/latest/book/cartridge/cartridge_dev/#stateful-failover

а я так и не понял, кому надо прописывать роль failover-coordinator (и в документации, кажется, на эту тему ничего нет). Каждому репликасету, в котором возможно переключение RW-ноды?

Start with the Stateful failover section in the Tarantool Cartridge Developer’s Guide at the linked documentation URL. Determine which replica sets should define the failover-coordinator role and update that section to answer the question clearly; the documentation is done when the role’s intended scope and configuration are explicit.