Well, if a request is http-only, on desktop, and not through zero,
what x_analytics value does it have? None.

The mapper consumes x_analytics, extracts key-value pairs, and turns
that into a map. So if there are no key-value pairs, the map is NULL.

On 29 April 2015 at 17:06, Madhumitha Viswanathan
<[email protected]> wrote:
> When I was working on related stuff, I found that the value of
> x_analytics_map ia null on the wmf.webrequest table in stat1002, when
> is_pageview is filtered for true, and agent_type is user. I'm wondering why
> that would be.
>
> These are the things I found:
>
> For 28th April 2015, of 741,858,511 requests, 28,827,374 have x_analytics(is
> set to '-') and x_analytics_map set to null. It's about 3.9% of all requests
> that day.
>
> You can find these counts by doing something like this on hive in the
> server. -
> SELECT count(*)
> FROM webrequest
> WHERE x_analytics_map IS NULL
>   AND agent_type = 'user'
>   AND is_pageview = TRUE
>   AND YEAR = 2015
>   AND MONTH = 4
>   AND DAY = 28;
>
> Does anyone have ideas on why this might be and if something underlying is
> broken?
>
> --Madhu :)
>
> _______________________________________________
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> https://lists.wikimedia.org/mailman/listinfo/analytics
>



-- 
Oliver Keyes
Research Analyst
Wikimedia Foundation

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