Timeout on bigquery v2 from GAE - google-app-engine

Question

I am doing a query to BigQuery from my app in google app engine, and receive a weird result from BQ sometimes (discovery#restDescription). It took me some time to understand that the problem occurs only when the amount of data i am querying is high, and thus making somehow my query time out within 10 sec.
I found a good description of my problem here:
Bad response to a BigQuery query
After reading again GAE docs, i found out that HTTP requests should be handled within a few seconds. So i guess, and this is only a guess, that bigquery might also be limiting itself in the same way, and therefor, has to respond to my queries "within seconds".
If this is the case, first of all, i will be a bit surprised, because my bigquery requests are for sure going to take more than few seconds... But anyway, i did a test by forcing a timeout of 1 second to my query, and then get the queryResult by polling the API call getQueryResults.
The outcome is very interesting. BigQuery is returning something within 3 secs, more or less (not 1 as i asked) and then i get my results later on, within 26 secs by polling. This looks like circumventing the 10 secs timeout issue.
But i hardly see myself doing this trick in production.
Did someone encontered the same problem with BigQuery? What am i supposed to do when the query lasts more than "few seconds"?
Here is the code i use to query:
query_config = {
'timeoutMs': 1000,
"defaultDataset": {
"datasetId": self.dataset,
"projectId": self.project_id
},
}
query_config.update(params)
result_json = (self.service.jobs()
.query(projectId=project,
body=query_config)
.execute())
And to retrieve the results, i poll with this:
self.service.jobs().getQueryResults(projectId=project,jobId=jobId).execute()
And those are the logs of what happens on BigQuery:
2012-12-03 12:31:19.835 /api/xxxxx/ 200 4278ms 0kb Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1
xx.xx.xx.xx - - [03/Dec/2012:02:31:19 -0800] "GET /api/xxxxx/ HTTP/1.1" 200 243 ....... ms=4278 cpu_ms=346 cpm_usd=0.000426 instance=00c61b117c1169753678c6d5dac736b223809b
I 2012-12-03 12:31:16.060
URL being requested: https://www.googleapis.com/discovery/v1/apis/bigquery/v2/rest?userIp=xx.xx.xx.xx
I 2012-12-03 12:31:16.061
Attempting refresh to obtain initial access_token
I 2012-12-03 12:31:16.252
URL being requested: https://www.googleapis.com/bigquery/v2/projects/xxxxxxxxxxxx/queries?alt=json
I 2012-12-03 12:31:19.426
URL being requested: https://www.googleapis.com/bigquery/v2/projects/xxxxxxxx/jobs/job_a1e74a6769f74cb997d998623b1b6b2e?alt=json
I 2012-12-03 12:31:19.500
This is what my query API call returns me. And in the meta data, status is 'RUNNING':
{u'kind': u'bigquery#queryResponse', u'jobComplete': False, u'jobReference': {u'projectId': u'xxxxxxxxxxx', u'jobId': u'job_a1e74a6769f74cb997d998623b1b6b2e'}}
with the jobId I am able to retrieve the results 26 secs later, when they are ready.
There must be another way! What am i doing wrong?