Changes in v2:
  - Review fixes as per reviews from Sergos, Vladimir
  - Fix triggers being run on xlogs resulting from
    box.schema.ugrade()
  - Introduce table.equals in a separate commit.
    Use it to define whether some schema changes were
    already applied.

https://github.com/tarantool/tarantool/issues/5894
https://github.com/tarantool/tarantool/tree/sp/gh-5894-1.6-upgrade

Serge Petrenko (2):
  lua: introduce table.equals method
  box: allow upgrading from version 1.6

src/box/lua/load_cfg.lua | 14 +
src/box/lua/upgrade.lua | 276 +++++++++++-
src/lua/table.lua | 26 ++
test/app-tap/table.test.lua | 31 +-
test/xlog/gh-5894-pre-1.7.7-upgrade.result | 400 ++++++++++++++++++
test/xlog/gh-5894-pre-1.7.7-upgrade.test.lua | 77 ++++
.../1.6.8/gh-5894-pre-1.7.7-upgrade/fill.lua | 1 +
.../1.7.1/gh-5894-pre-1.7.7-upgrade/fill.lua | 1 +
.../1.7.2/gh-5894-pre-1.7.7-upgrade/fill.lua | 1 +
.../1.7.5/gh-5894-pre-1.7.7-upgrade/fill.lua | 1 +
test/xlog/upgrade/fill.lua | 4 +
11 files changed, 829 insertions(+), 3 deletions(-)
create mode 100644 test/xlog/gh-5894-pre-1.7.7-upgrade.result
create mode 100644 test/xlog/gh-5894-pre-1.7.7-upgrade.test.lua
create mode 120000 test/xlog/upgrade/1.6.8/gh-5894-pre-1.7.7-upgrade/fill.lua
create mode 120000 test/xlog/upgrade/1.7.1/gh-5894-pre-1.7.7-upgrade/fill.lua
create mode 120000 test/xlog/upgrade/1.7.2/gh-5894-pre-1.7.7-upgrade/fill.lua
create mode 120000 test/xlog/upgrade/1.7.5/gh-5894-pre-1.7.7-upgrade/fill.lua

--
2.30.1 (Apple Git-130)