[Tarantool-patches] [PATCH v10 0/2] relay: provide downstream lag information

[Cyrill Gorcunov]

Guys, here is the latest version of "downstream lag" series, hopefully
everything is fine right now. I put only changes against v9 which could
be found here

https://lists.tarantool.org/tarantool-patches/20210617154835.315576-1-gorcunov@gmail.com/

v10:
 - since we're using error injection exclude the test from release build
   (by Vlad)
 - provide @applier argument for applier_apply_tx helper since we need
   to pass replica_id into apply_synchro_row/apply_plain_tx (the argument
   been removed in b35e4708e8419759bf2ec024d1f91ae7a356af79 because we
   didn't need it at that moment).

issue https://github.com/tarantool/tarantool/issues/5447
branch gorcunov/gh-5447-relay-lag-10

Cyrill Gorcunov (2):
  applier: send transaction's first row WAL time in the applier_writer_f
  relay: provide information about downstream lag

 .../unreleased/gh-5447-downstream-lag.md      |   6 +
 src/box/applier.cc                            | 101 +++++++++++---
 src/box/lua/info.c                            |   3 +
 src/box/relay.cc                              |  41 ++++++
 src/box/relay.h                               |   6 +
 src/box/replication.cc                        |   1 +
 src/box/replication.h                         |   5 +
 .../replication/gh-5447-downstream-lag.result | 124 ++++++++++++++++++
 .../gh-5447-downstream-lag.test.lua           |  56 ++++++++
 test/replication/suite.ini                    |   2 +-
 10 files changed, 327 insertions(+), 18 deletions(-)
 create mode 100644 changelogs/unreleased/gh-5447-downstream-lag.md
 create mode 100644 test/replication/gh-5447-downstream-lag.result
 create mode 100644 test/replication/gh-5447-downstream-lag.test.lua


base-commit: e6b74fd44c4e3d9304363ef3d367600bb9b0538d
-- 
2.31.1