hmgetall.lua

local hmgetall = function(...)
  if next(arg) == nil then return [] end
  local result = []
  for j, key in ipairs(arg) do
    local bulk = redis.call('HGETALL', key)
    local hash = {}
    local nextfield
    for i, v in ipairs(bulk) do
      if i % 2 == 1 then
        nextkey = v
      else
        hash[nextkey] = v
      end
    end
    result[j] = hash
  end
  return result
end
return hmgetall(KEYS)