[Tarantool-patches] [PATCH 0/8] wait for lsn and confirm

[Serge Petrenko]

Issues:
https://github.com/tarantool/tarantool/issues/4844
https://github.com/tarantool/tarantool/issues/4845
https://github.com/tarantool/tarantool/issues/4847

Branch:
https://github.com/tarantool/tarantool/tree/sp/gh-4847-wal-confirm-msg

This patchset contains Vlad's patches introducing txn_limbo, is_sync space flag,
synchronous transactions waiting for replica lsn and my patches regarding
writing CONFIRM entry to WAL and waiting for it to appear on replicas.

Local recovery with respect to CONFIRM is not yet implemented, just like
ROLLBACK message and its processing.

Serge Petrenko (4):
  txn_limbo: follow-up fixes
  txn_limbo: fix instance id assignment
  xrow: introduce CONFIRM entry
  replication: write and read CONFIRM entries

Vladislav Shpilevoy (4):
  replication: introduce space.is_sync option
  replication: introduce replication_sync_quorum cfg
  txn: add TXN_WAIT_ACK flag
  replication: make sync transactions wait quorum

 src/box/CMakeLists.txt                        |   1 +
 src/box/applier.cc                            |  81 +++++-
 src/box/box.cc                                |  32 +++
 src/box/box.h                                 |   1 +
 src/box/errcode.h                             |   2 +
 src/box/iproto_constants.h                    |   3 +
 src/box/lua/cfg.cc                            |   9 +
 src/box/lua/load_cfg.lua                      |   5 +
 src/box/lua/schema.lua                        |   2 +
 src/box/lua/space.cc                          |   5 +
 src/box/relay.cc                              |  14 +-
 src/box/replication.cc                        |   1 +
 src/box/replication.h                         |   6 +
 src/box/space_def.c                           |   2 +
 src/box/space_def.h                           |   6 +
 src/box/txn.c                                 | 111 ++++++++-
 src/box/txn.h                                 |  30 +++
 src/box/txn_limbo.c                           | 232 ++++++++++++++++++
 src/box/txn_limbo.h                           | 174 +++++++++++++
 src/box/xrow.c                                |  74 ++++++
 src/box/xrow.h                                |  23 ++
 test/app-tap/init_script.result               |   1 +
 test/box/admin.result                         |   2 +
 test/box/cfg.result                           |   4 +
 test/box/error.result                         |   2 +
 .../sync_replication_sanity.result            |  39 +++
 .../sync_replication_sanity.test.lua          |  16 ++
 27 files changed, 869 insertions(+), 9 deletions(-)
 create mode 100644 src/box/txn_limbo.c
 create mode 100644 src/box/txn_limbo.h
 create mode 100644 test/replication/sync_replication_sanity.result
 create mode 100644 test/replication/sync_replication_sanity.test.lua

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