[Tarantool-patches] [PATCH v2 0/3] gc/xlog: delay xlog cleanup until relays are subscribed

[Cyrill Gorcunov]

Take a look please.

v2:
 - rebase code to the fresh master branch
 - keep wal_cleanup_delay option name
 - pass wal_cleanup_delay as an option to gc_init, so it
   won't be dependent on cfg engine
 - add comment about gc_delay_unref in plain bootstrap mode
 - allow to setup wal_cleanup_delay dynamically
 - update comment in gc_wait_cleanup and call it conditionally
 - declare wal_cleanup_delay as a double
 - rename gc.cleanup_is_paused to gc.is_paused and update output
 - do not show ref counter in box.info.gc() output
 - update documentation
 - move gc_delay_unref inside relay_subscribe call which runs
   in tx context (instead of relay's context)
 - update tests:
   - add a comment why we need a temp space on replica node
   - use explicit insert/snapshot operations
   - shrkink the number of insert/snapshot to speedup testing
   - use "restart" instead of stop/start pair
   - use wait_log helper instead of own function
   - add is_paused test

issue https://github.com/tarantool/tarantool/issues/5806
branch gorcunov/gh-5806-xlog-gc-2

Cyrill Gorcunov (3):
  gc/xlog: delay xlog cleanup until relays are subscribed
  test: add a test for wal_cleanup_delay option
  test: box-tap/gc -- add test for is_paused field

 src/box/box.cc                                |  46 +-
 src/box/box.h                                 |   1 +
 src/box/gc.c                                  |  97 ++++-
 src/box/gc.h                                  |  38 +-
 src/box/lua/cfg.cc                            |   9 +
 src/box/lua/info.c                            |   4 +
 src/box/lua/load_cfg.lua                      |   4 +
 src/box/relay.cc                              |   1 +
 src/box/replication.cc                        |   2 +
 test/app-tap/init_script.result               |   1 +
 test/box-tap/gc.test.lua                      |   3 +-
 test/box/admin.result                         |   2 +
 test/box/cfg.result                           |   4 +
 test/replication/gh-5806-master.lua           |   8 +
 test/replication/gh-5806-slave.lua            |   8 +
 test/replication/gh-5806-xlog-cleanup.result  | 397 ++++++++++++++++++
 .../replication/gh-5806-xlog-cleanup.test.lua | 166 ++++++++
 test/unit/snap_quorum_delay.cc                |   2 +-
 18 files changed, 784 insertions(+), 9 deletions(-)
 create mode 100644 test/replication/gh-5806-master.lua
 create mode 100644 test/replication/gh-5806-slave.lua
 create mode 100644 test/replication/gh-5806-xlog-cleanup.result
 create mode 100644 test/replication/gh-5806-xlog-cleanup.test.lua


base-commit: f4e248c0c13a46beee238fbebc38ef687ef09d02
-- 
2.30.2