Hi,
Just following up to thank you guys.  

Kevin and Ottomoata guided me through getting set up on hive and I made the first queries I needed to!  Here were the results (if you're interested)
Best,

J



4/12 full day

mobile_site Pageviews % of stable
a  8,578 0.004%
b  46,705 0.019%
stable  244,816,000

Strangely, the event-logs for specific actions showed much higher traffic for beta but this is likely due to different user groups?
(multiple days)
mobile_site  search events % of stable
alpha  18,768 0.01%
beta  153,617 0.09%
stable  178,118,332


queries:

for alpha beta
SELECT
  x_analytics_map['mf-m'] AS mobile_site, count(*)
FROM
  wmf.webrequest
WHERE
  access_method = "mobile web"
  AND YEAR = 2015
  AND MONTH = 4
  AND DAY = 12
  AND user_agent_map['device_family'] <> "Spider"
  AND is_pageview = TRUE
  AND x_analytics_map['mf-m'] IS NOT NULL
GROUP BY
  x_analytics_map['mf-m']
LIMIT 50;

For stable:
SELECT
  count(*)
FROM
  wmf.webrequest
  tablesample(BUCKET 1 OUT OF 1000 ON rand())
WHERE
  access_method = "mobile web"
  AND YEAR = 2015
  AND MONTH = 4
  AND DAY = 12
  AND is_pageview = TRUE
  AND user_agent_map['device_family'] <> "Spider"
  AND x_analytics_map['mf-m'] IS NULL
LIMIT 50;


For events:
SELECT count(uuid), event_name, event_mobileMode  
FROM 
MobileWebUIClickTracking_10742159
GROUP BY event_name, event_mobileMode;