APM fields

[Terry_Xia]

Hi Elastic Team：

I successfully built my Elastic APM system, the versions of each module are as follows:
Springboot : 1.5.10
Java: 1.8.0_161
APM Server : 6.3
APM Agent : 0.6
Elastic :6.3
Kibana:6.3

I have seen several APM fields not defined in the official documentation, but can be seen in Kibana.Just like 'context.response.headers_sent ' and 'context.request.headers.referer',what does these fields mean? And why are these fields not defined in the official documentation?

Best wishes!

[makwarth (Rasmus Makwarth)]

Hi there,
thanks for your interest in Elastic APM.

"response.headers_sent" is a boolean used to indicate if the HTTP headers in the response was sent at the time the error occurred. (So it's only relevant for errors)
"request.headers.referer" is the address of the previous page from which a user was linked.

It looks like you don't have the APM UI in your Kibana. To get the free APM UI, check out the default distribution of Kibana, which includes all of our Basic features - for free. Learn more about the APM UI here.

best,
Rasmus

[felixbarny (Felix Barnsteiner)]

The flag headers_sent reflects ServletResponse#isCommited. It is set on transactions and errors.