Error while flushing spans

[Tom Eicher]

Hello,

so we finally upgraded our production server to Wilfdly 26.0.1

In the log I get frequent "Error while flushing N spans" errors (at debug level)

Is this something to worry about?

This is the default standalone configuration, and I did not intent to use any such feature.

Should I disable something, fix something, or just put the logger to Info level ?

2022-03-30 17:08:09,041 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans
2022-03-30 17:08:17,042 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 2 spans
2022-03-30 17:08:21,043 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans
2022-03-30 17:08:37,044 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans
2022-03-30 17:08:50,045 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans
2022-03-30 17:09:09,048 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 24 spans
2022-03-30 17:09:12,048 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans
2022-03-30 17:09:15,048 {/} DEBUG org.wildfly.extension.microprofile.opentracing Error while flushing 1 spans

Thanks Cheers Tom.

[Tom Eicher]

Hello,
so what does this message mean.
I realize it's only DEBUG, but it seems to be on by default,
and is it normal to get it on a standalone server?
Thanks Tom.

[James Perkins]

Sorry for the late reply. Yes this is normal and it's nothing to worry about. One option to make it go away is to remove the microprofile-opentracing-smallrye subsystem if you do not use OpenTracing:

/subsystem=microprofile-opentracing-smallrye:remove