[4pt] Upgrade crud from 0.5.0 to 0.6.0 getting a error with same handler

[seet61]

We have app with http server and spaces.

Wheh we upgrade crud from 0.5.0 to 0.6.0 getting a error with same handler for http method.

-- country_list
        local country_list_space = box.schema.space.create('country_list', {
            engine = 'memtx',
            if_not_exists = true,
        })
        log.info('country_list space was configured')

        country_list_space:format({
            {name='Alfa2',type='string'},
            {name='Alfa3',type='string'},
            {name='Numeric',type='string'},
            {name='VAS',type='unsigned'},
            {name='Name',type='string'},
            {name='ttl',type='unsigned'},
            {name='bucket_id', type='unsigned'},
        })
        log.info('country_list was formatted')

        country_list_space:create_index('country_list_Alfa2_idx', {parts={{field='Alfa2'}},
            if_not_exists=true})
        log.info('country_list_Alfa2_idx')

        country_list_space:create_index('country_list_Alfa3_idx', {parts={{field='Alfa3'}},
            if_not_exists=true})
        log.info('country_list_Alfa3_idx')

        country_list_space:create_index('country_list_Numeric_idx', {parts={{field='Numeric'}},
            unique=false,
            if_not_exists=true})
        log.info('country_list_Numeric_idx')

        country_list_space:create_index('country_list_VAS_idx', {parts={{field='VAS'}},
            unique=false,
            if_not_exists=true})
        log.info('country_list_VAS_idx')

        country_list_space:create_index('bucket_id', {parts={{field='bucket_id'}},
            unique=false,
            if_not_exists=true})
        log.info('country_list_bucket_id')

        country_list_space:create_index('ttl', {parts={{field='ttl'}},
            unique=false,
            if_not_exists=true})
        log.info('country_list_ttl')

Http request:

POST /v1/cache/readByIndex HTTP/1.1
Host: 10.78.221.224:8086
Content-Type: application/json
Content-Length: 72

{"filter":"RUS","index":"country_list_Alfa3_idx","space":"country_list"}

At handler:

-- Read value from space by index
local function read_value_by_index(self)
    log.info('read_value_by_index request: ' .. tostring(self));
    log.info('read_value_by_index body: ' .. json.encode(self:json()))
....
    local args = self:json()
    local space = args.space
    local index = args.index
    local filter = args.filter
....
    log.debug('read_value_by_index: ' .. space .. " " .. index .. " " .. filter)
    local value, err = crud.select(space, {{'==', index, filter}}, {timeout = 5}) ---- handlers.lua:421: this row
    local response
    if err ~= nil then
<------>response = self:render({json = { filter = filter, message = err }})
<------>response.status = 400
    elseif #value.rows == 0 then
<------>response = self:render({json = { filter = filter }})
<------>response.status = 404
    else
<------>value = get_object(value.metadata, value.rows[1])
<------>log.debug('read_value_by_index value: ' .. json.encode(value))
<------>response = self:render({
<------>    json = value
<------>})
    end
....
    log.info('read_value_by_index response: ' .. json.encode(response))
    return response
end

At logs:

{"time": "2021-04-01T10:26:50.334+0300", "level": "INFO", "message": "read_value_by_index body: {\"filter\":\"RUS\",\"space\":\"country_list\",\"index\":\"country_list_Alfa3_idx\"}", "pid": 848 , "cord_name": "main", "fiber_id": 136157, "fiber_name": "http\/10.12.75.136:39966", "file": "\/usr\/share\/tarantool\/tarantool_cache\/app\/roles\/handlers.lua", "line": 413}
{"time": "2021-04-01T10:26:50.336+0300", "level": "INFO", "message": "read_value_by_index response: {\"status\":400,\"body\":\"{\\\"filter\\\":\\\"RUS\\\",\\\"message\\\":{\\\"line\\\":223,\\\"class_name\\\":\\\"SelectError\\\",\\\"err\\\":\\\"Tuple field 4 type does not match one required by operation: expected string\\\",\\\"file\\\":\\\"...che\\\\\\\/.rocks\\\\\\\/share\\\\\\\/tarantool\\\\\\\/crud\\\\\\\/select\\\\\\\/compat\\\\\\\/select.lua\\\",\\\"stack\\\":\\\"stack traceback:\\\\n\\\\t...che\\\\\\\/.rocks\\\\\\\/share\\\\\\\/tarantool\\\\\\\/crud\\\\\\\/select\\\\\\\/compat\\\\\\\/select.lua:223: in function <...che\\\\\\\/.rocks\\\\\\\/share\\\\\\\/tarantool\\\\\\\/crud\\\\\\\/select\\\\\\\/compat\\\\\\\/select.lua:175>\\\\n\\\\t[C]: in function 'xpcall'\\\\n\\\\t...antool\\\\\\\/tarantool_cache\\\\\\\/.rocks\\\\\\\/share\\\\\\\/tarantool\\\\\\\/errors.lua:145: in function 'select'\\\\n\\\\t\\\\\\\/usr\\\\\\\/share\\\\\\\/tarantool\\\\\\\/tarantool_cache\\\\\\\/app\\\\\\\/roles\\\\\\\/handlers.lua:421: in function <\\\\\\\/usr\\\\\\\/share\\\\\\\/tarantool\\\\\\\/tarantool_cache\\\\\\\/app\\\\\\\/roles\\\\\\\/handlers.lua:411>\\\\n\\\\t[C]: in function 'pcall'\\\\n\\\\t...che\\\\\\\/.rocks\\\\\\\/share\\\\\\\/tarantool\\\\\\\/metrics\\\\\\\/collectors\\\\\\\/shared.lua:100: in function 'sub'\\\\n\\\\t...l\\\\\\\/tarantool_cache\\", "pid": 848 , "cord_name": "main", "fiber_id": 136157, "fiber_name": "http\/10.12.75.136:39966", "file": "\/usr\/share\/tarantool\/tarantool_cache\/app\/roles\/handlers.lua", "line": 437}

After downgrade to 0.5.0 everything ok.
Tuple field 4 type does not match one required by operation: expected string. Why?

Tuple field 4 is {name='VAS',type='unsigned'}.

[seet61]

# tarantool -version
Tarantool 2.6.2-0-g34d504d
Target: Linux-x86_64-RelWithDebInfo


10.78.221.228:3301> crud.select("country_list", {{'==', "country_list_Alfa3_idx", "RUS"}}, {timeout = 5})
---
- null
- line: 223
  class_name: SelectError
  err: 'Tuple field 4 type does not match one required by operation: expected string'
  file: '...che/.rocks/share/tarantool/crud/select/compat/select.lua'
  stack: "stack traceback:\n\t...che/.rocks/share/tarantool/crud/select/compat/select.lua:223:
    in function <...che/.rocks/share/tarantool/crud/select/compat/select.lua:175>\n\t[C]:
    in function 'xpcall'\n\t...antool/tarantool_cache/.rocks/share/tarantool/errors.lua:145:
    in function <...antool/tarantool_cache/.rocks/share/tarantool/errors.lua:139>\n\t[C]:
    in function 'pcall'\n\tbuiltin/box/console.lua:402: in function <builtin/box/console.lua:378>\n\t[C]:
    at 0x004ee0a0"
  str: 'SelectError: Tuple field 4 type does not match one required by operation:
    expected string'
...

Same problem.

We have problem only at test cluster with load.

At dev zone no such problem.

[olegrok]

I assume it was related to tarantool/metrics#235. Feel free to reopen if problem exists after metrics upgrade.