output with gzip encoding brings warning to console

[benjaminhuo]

If encoding is set to gzip, logstash console will get warnings like below:

WARNING: can not set Session#timeout=(0) no session context
WARNING: can not set Session#timeout=(300) no session context
WARNING: can not set Session#timeout=(300) no session context
WARNING: can not set Session#timeout=(300) no session context
WARNING: can not set Session#timeout=(300) no session context
WARNING: can not set Session#timeout=(300) no session context
WARNING: can not set Session#timeout=(300) no session context

 output {
    qingstor {
	codec => line { format => "%{ct},%{channel},%{device},%{tag},%{v},%{q},%{t}" } 
    	access_key_id => "xxx"
    	secret_access_key => "xxxxxx"
    	bucket => "mybucket"
	region => "pek3a"
	encoding => "gzip"
    }
 }

[benjaminhuo]

Logstash version is 5.5.1

[yimin-zhao]

I'm sorry I have not been able to reply sooner.
As far as I know, this warning comes from a dependent gem, which has no relevance to encode methods.
I'll give you more details the sooner when we locate the problem.

[yimin-zhao]

This Warning often follows with a failed uploading. And the failure is critical to the whole plugin functionality.
Currently I have no clue why the uploading procedure failed. I will keep track of it

[yimin-zhao]

This problem is about incompatibility with logstash 5.5.x, it works fine with previous releases.
I think it is not a bug and replace the bug label with 'help wanted'.