Hi Sergey, thank you for the patch, LGTM.   >Среда, 8 апреля 2020, 18:43 +03:00 от Sergey Bronnikov : >  >From: Sergey Bronnikov < sergeyb@tarantool.org > > >Closes #4681 >--- > src/box/lua/upgrade.lua | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > >diff --git a/src/box/lua/upgrade.lua b/src/box/lua/upgrade.lua >index 075cc236e..6b8ece513 100644 >--- a/src/box/lua/upgrade.lua >+++ b/src/box/lua/upgrade.lua >@@ -173,7 +173,7 @@ local function initial_1_7_5() >     format[5] = {name='field_count', type='unsigned'} >     format[6] = {name='flags', type='map'} >     format[7] = {name='format', type='array'} >- local def = _space:insert{_space.id, ADMIN, '_space', 'memtx', 0, MAP, format} >+ _space:insert{_space.id, ADMIN, '_space', 'memtx', 0, MAP, format} >     -- space name is unique >     log.info("create index primary on _space") >     _index:insert{_space.id, 0, 'primary', 'tree', { unique = true }, {{0, 'unsigned'}}} >@@ -194,7 +194,7 @@ local function initial_1_7_5() >     format[4] = {name = 'type', type = 'string'} >     format[5] = {name = 'opts', type = 'map'} >     format[6] = {name = 'parts', type = 'array'} >- def = _space:insert{_index.id, ADMIN, '_index', 'memtx', 0, MAP, format} >+ _space:insert{_index.id, ADMIN, '_index', 'memtx', 0, MAP, format} >     -- index name is unique within a space >     log.info("create index primary on _index") >     _index:insert{_index.id, 0, 'primary', 'tree', {unique = true}, {{0, 'unsigned'}, {1, 'unsigned'}}} >@@ -211,7 +211,7 @@ local function initial_1_7_5() >     format[2] = {name='owner', type='unsigned'} >     format[3] = {name='name', type='string'} >     format[4] = {name='setuid', type='unsigned'} >- def = _space:insert{_func.id, ADMIN, '_func', 'memtx', 0, MAP, format} >+ _space:insert{_func.id, ADMIN, '_func', 'memtx', 0, MAP, format} >     -- function name and id are unique >     log.info("create index _func:primary") >     _index:insert{_func.id, 0, 'primary', 'tree', {unique = true}, {{0, 'unsigned'}}} >@@ -231,7 +231,7 @@ local function initial_1_7_5() >     format[3] = {name='name', type='string'} >     format[4] = {name='type', type='string'} >     format[5] = {name='auth', type='map'} >- def = _space:insert{_user.id, ADMIN, '_user', 'memtx', 0, MAP, format} >+ _space:insert{_user.id, ADMIN, '_user', 'memtx', 0, MAP, format} >     -- user name and id are unique >     log.info("create index _func:primary") >     _index:insert{_user.id, 0, 'primary', 'tree', {unique = true}, {{0, 'unsigned'}}} >@@ -251,7 +251,7 @@ local function initial_1_7_5() >     format[3] = {name='object_type', type='string'} >     format[4] = {name='object_id', type='unsigned'} >     format[5] = {name='privilege', type='unsigned'} >- def = _space:insert{_priv.id, ADMIN, '_priv', 'memtx', 0, MAP, format} >+ _space:insert{_priv.id, ADMIN, '_priv', 'memtx', 0, MAP, format} >     -- user id, object type and object id are unique >     log.info("create index primary on _priv") >     _index:insert{_priv.id, 0, 'primary', 'tree', {unique = true}, {{1, 'unsigned'}, {2, 'string'}, {3, 'unsigned'}}} >@@ -580,7 +580,7 @@ local function upgrade_to_2_1_0() >     -- Now, abscent field means NULL, so we can safely set second >     -- field in format, marking it nullable. >     log.info("Add nullable value field to space _schema") >- local format = {} >+ format = {} >     format[1] = {type='string', name='key'} >     format[2] = {type='any', name='value', is_nullable=true} >     box.space._schema:format(format) >-- >2.23.0 >      -- Alexander Tikhonov