https://bugzilla.wikimedia.org/show_bug.cgi?id=53806
--- Comment #5 from [email protected] --- Looking further, we do not log the X-Analytics header of the request, but the X-Analytics header of the response. Could it be that the caching interferes here? Doing some quick check for the 404-01 carrier (India) seems to somewhat support this, as ~30% of hits come misattributed, while only ~1% of the misses do. It a least shows a really heavy bias that hits are more affected than misses. Could it be (wild guess) that upon a cache hit, varnish uses the X-Analytics header of the cached document? If the caching is not the issue... I am not sure if this is related, but X-Analytics column in the logs is not always zero=XXX-XX We also have log lines where the X-Analytics column zero=XXX-XX;mf-m=a zero=XXX-XX;mf-m=b and in the sampled-1000 (not limited to mobile or zero) stream we also see some mf-m=a mf-m=b . I could not find this 'mf-m' in the puppet repo. And each of those 'mf-m' log lines is for a 'pass/200' request. -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug. _______________________________________________ Wikibugs-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikibugs-l
