JAEGER_REPORTER_FLUSH_INTERVAL environment variable is not working

Setting the flush interval using the environment variable JAEGER_REPORTER_FLUSH_INTERVAL is not working.
When configuring a tracer the FromEnv() function is used. A flush interval is set using environment variable JAEGER_REPORTER_FLUSH_INTERVAL but the setting is not used. The setting is still the default 1 sec. I have verified that using environment variables in general is working by for example setting JAEGER_DISABLED=true.

I then tried to set the flush interval directly by setting BufferFlushInterval directly in the ReporterConfig structure and this worked as expected.

Forgot to mention that I am using client library version2.25.0

Looking at the code here:

jaeger-client-go/config/config_env.go

Lines 170 to 176 in 4ab51d8

    
           if e := os.Getenv(envReporterFlushInterval); e != "" { 
        
           	if value, err := time.ParseDuration(e); err == nil { 
        
           		rc.BufferFlushInterval = value 
        
           	} else { 
        
           		return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envReporterFlushInterval, e) 
        
           	} 
        
           }

it is hard to see a path which would go through the JAEGER_DISABLED setting and not JAEGER_REPORTER_FLUSH_INTERVAL.
Can you create an error by setting it to, say "xxx" which should fail to parse as a duration and show up as an error return?

	if e := os.Getenv(envReporterFlushInterval); e != "" {
	if value, err := time.ParseDuration(e); err == nil {
	rc.BufferFlushInterval = value
	} else {
	return nil, errors.Wrapf(err, "cannot parse env var %s=%s", envReporterFlushInterval, e)
	}
	}