sandeep-paliwal commented on a change in pull request #2282: Distributed
tracing support #2192
URL:
https://github.com/apache/incubator-openwhisk/pull/2282#discussion_r120582969
##########
File path: common/scala/src/main/resources/application.conf
##########
@@ -12,3 +12,22 @@ akka.http {
max-open-requests = 128
}
}
+
+akka.tracing {
+ #zipkin configuration
+ host = "localhost"
+ host = ${?TRACING_HOST} # Override default HOST by enviornment variable
+ port = 9410 # default
+ port = ${?TRACING_PORT} # Override default PORT by enviornment variable
+ sample-rate = 100 # by default trace every 100th request
+ sample-rate = ${?TRACING_SAMPLE_RATE} # Override default Sample_Rate by
enviornment variable
+
+ enabled = false
+ enabled = ${?TRACING_ENABLED} # Override default Enabled by enviornment
variable
+ max-spans-per-second = 100
Review comment:
`max-spans-per-second` allows to discard any span sampling above specified
limit. So within a given sample rate if there are too many spans being sampled
this setting can be used to control that.
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