OnlyPiglet opened a new issue #2865:
URL: https://github.com/apache/apisix/issues/2865
### Issue description
just want to ask when the clean_handlers function will be execute which are
in the line 106 of balancer.lua , I just see the cleaner_handler will be
execute in the line 170 of config_etcd.lua
balancer.lua
```lua
if upstream.parent then
core.table.insert(upstream.parent.clean_handlers, function ()
core.log.info("try to release checker: ", tostring(checker))
checker:clear()
checker:stop()
end)
else
core.table.insert(healthcheck_parent.clean_handlers, function ()
core.log.info("try to release checker: ", tostring(checker))
checker:clear()
checker:stop()
end)
end
```
config_etcd.lua
```lua
if self.values then
for i, val in ipairs(self.values) do
if val and val.clean_handlers then
for _, clean_handler in ipairs(val.clean_handlers) do
clean_handler(val)
end
val.clean_handlers = nil
end
end
```
### Environment
* apisix version (cmd: `apisix version`):
lastest
* OS:
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