[Tarantool-patches] [PATCH v2] replication: add box.info.replication_anon
Kirill Yukhin
kyukhin at tarantool.org
Fri May 15 17:16:14 MSK 2020
Hello,
On 24 апр 19:28, Serge Petrenko wrote:
> Closes #4900
>
> @TarantoolBot document
> Title: add new field to box.info: replication_anon
>
> It is now possible to list all the anonymous replicas following the
> instance with a call to `box.info.replication_anon()`
> The output is similar to the one produced by `box.info.replication` with
> an exception that anonymous replicas are indexed by their uuid strings
> rather then server ids, since server ids have no meaning for anonymous
> replicas.
>
> Example:
> ```
> tarantool> box.info.replication_anon
> ---
> - []
> ...
>
> tarantool> box.info.replication_anon()
> ---
> - 02757524-1887-4c75-9137-d5c191fba507:
> id: 0
> uuid: 02757524-1887-4c75-9137-d5c191fba507
> lsn: 0
> downstream:
> status: follow
> idle: 0.43651100000716
> vclock: {1: 1}
> 937a8292-8f99-4d11-aede-b97e9f5e9473:
> id: 0
> uuid: 937a8292-8f99-4d11-aede-b97e9f5e9473
> lsn: 0
> downstream:
> status: follow
> idle: 0.5189309999987
> vclock: {1: 1}
> ...
>
> ```
>
> Note, that anonymous replicas hide their lsn from the others, so
> anonymous replica lsn will always be reported as zero, even if anonymous
> replicas perform some local space operations.
> To know the anonymous replica's lsn, you have to issue `box.info.lsn` on
> it.
> ---
> https://github.com/tarantool/tarantool/issues/4900
> https://github.com/tarantool/tarantool/tree/sp/gh-4900-list-anon-replicas
I've checked your patch into master.
--
Regards, Kirill Yukhin
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