We have APM set up for a series of Java services and we have found a rather curious behavior.
For some timespan, the service map of a particular service shows some relations with other monitorized services, this is OK:
If we change the timespan to make it wider, but also containing the previous timespan, the service map show less relations:
¿Why the original relations are missing? ¿Does the service map have a limit in how many transactions uses to be built? ¿Does it use the most common transactions or the most repeated?
Kibana version: 7.14.1
Elasticsearch version: 7.14.1
APM Server version: 7.14.1
APM Agent language and version: Java 1.x