request help: 没有安装cjson，但仍要求删除cjson

[HuangDayu]

Issue description

huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ make deps
luarocks install rockspec/apisix-master-0.rockspec --tree=deps --only-deps --local
Stopping after installing dependencies for apisix master-0

huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ ./bin/apisix version
please remove the cjson library in Lua, it may conflict with the cjson library in openresty.
 luarocks remove cjson
huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ sudo luarocks remove cjson

Error: Could not find rock 'cjson' in /usr/local
huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$

Environment

• apisix version (cmd: apisix version): 1.5
• OS:

LSB Version:    core-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.1 LTS
Release:        20.04
Codename:       focal

[spacewander]

Try lua -e "require 'cjson'"?

[spacewander]

And lua -e "require('table.new')". Please show us your output.

[HuangDayu]

huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ lua -e "require 'cjson'"
huangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ lua -e "require('table.new')"
lua: (command line):1: module 'table.new' not found:
        no field package.preload['table.new']
        no file './table/new.lua'
        no file '/usr/local/share/lua/5.1/table/new.lua'
        no file '/usr/local/share/lua/5.1/table/new/init.lua'
        no file '/usr/local/lib/lua/5.1/table/new.lua'
        no file '/usr/local/lib/lua/5.1/table/new/init.lua'
        no file '/usr/share/lua/5.1/table/new.lua'
        no file '/usr/share/lua/5.1/table/new/init.lua'
        no file './table/new.so'
        no file '/usr/local/lib/lua/5.1/table/new.so'
        no file '/usr/lib/x86_64-linux-gnu/lua/5.1/table/new.so'
        no file '/usr/lib/lua/5.1/table/new.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
        no file './table.so'
        no file '/usr/local/lib/lua/5.1/table.so'
        no file '/usr/lib/x86_64-linux-gnu/lua/5.1/table.so'
        no file '/usr/lib/lua/5.1/table.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
        [C]: in function 'require'
        (command line):1: in main chunk
        [C]: ?

@spacewander

[spacewander]

Look like you has cjson installed on your machine but it is not installed via luarocks.
Maybe you can find cjson.so under your package.cpath.

[HuangDayu]

@spacewander 感谢，虽然我还没解决，但是我换CentOS了，CentOS就没问题。

[HuangDayu]

Look like you has cjson installed on your machine but it is not installed via luarocks.
Maybe you can find cjson.so under your package.cpath.

issues/2431 可以解答一下这个问题吗？非常感谢。

[membphis]

lhuangdayu@SK-20191227AUWA:~/apache-apisix-1.5$ lua -e "require 'cjson'"

@HuangDayu

it seems that you installed cjson library for standard Lua land.

[idbeta]

If there is no more information to provide, I think this issue can be closed. Do you agree? @HuangDayu @membphis