Hi Steven -- is this working now? Cheers, -Toby On Thu, Oct 10, 2013 at 6:36 PM, Steven Walling <swalling(a)wikimedia.org>wrote;wrote:

What is meant by large here? On Fri, Oct 11, 2013 at 10:42 AM, Dario Taraborelli < dtaraborelli(a)wikimedia.org&gt; wrote:

I tried uploading a CSV with 500 user_ids and got the same 504 Gateway Time-out error as Steven Thanks, bookmarked :) We will need to discuss and benchmark performance for these jobs, this is one of the issues that I'd personally like to see prioritized over UX as it's something the entire Product team would benefit from. Dario

Dear All, It turns out it was a timeout setting issue with the new HTTPS gateway. It was set to 60 seconds which is reasonable, but not if all that heavy validation is happening synchronously. So we upped it temporarily but this just means we need to schedule Mingle #818 ASAP. Thanks for your patience, all should be well now. Dan On Fri, Oct 11, 2013 at 2:13 PM, Diederik van Liere &lt;dvanliere(a)wikimedia.org > > > > On Fri, Oct 11, 2013 at 10:58 AM, Dario Taraborelli < > dtaraborelli(a)wikimedia.org> >> On Fri, Oct 11, 2013 at 10:42 AM, Dario Taraborelli < >> dtaraborelli(a)wikimedia.org>> >>> I think we should set the right expectations about working with large >>> cohorts. >>> >> I would not call 700 editors a large cohort :) this should just work >> fine. We don't know yet whether this was related to labs maintenance or not >> and I asked Steven to share the cohort with us to verify that it works. >> >> >> I tried uploading a CSV with 500 user_ids and got the same 504 Gateway >> Time-out error as Steven >> >> It might have to do with the proxy server we are using for the SSL > certificate. I believe Dan is looking into this right now. > (thanks Yuvi for pointing this out) > >> Quoting Dan's response from September 17: >>> >>> I just wanted to correct one small misunderstanding. >>> Running large cohorts does *not* work in wikimetrics at this time for two >>> reasons: >>> >>> 1. You'll have a problem uploading them as Dario mentioned (because it >>> validates each user individually against the database, as Dario guessed). >>> The best solution for this is to create a temp table of all the users we >>> are trying to upload and verify them in one query. This would be very fast >>> and not too hard to implement. >>> >>> Uploading a cohort this should work work but it's a blocking operation >> which is not very user friendly, Mingle card 818 addresses this issue. >> >> >> Thanks, bookmarked :) >> >> >>> 2. A large cohort will not fit in the "IN" clause of a SQL query. This >>> is a known limitation and we have to fix it by creating a temporary table >>> from the cohort. We can then join to the temp table for any metrics. The >>> reason I've delayed this is because the same mechanism could be used to >>> implement dynamic cohorts, boolean cohort combinations, and project >>> level cohorts. We should prioritize these technically related features and >>> then I can come up with a plan to do the minimally viable thing without >>> shooting ourselves in the foot. >>> >>> I did some calculations and it seems that this is only an issue with >> cohorts larger than 200k editors. >> >> >> We will need to discuss and benchmark performance for these jobs, this is >> one of the issues that I'd personally like to see prioritized over UX as >> it's something the entire Product team would benefit from. >> >> Dario >> >> >> _______________________________________________ >> Analytics mailing list >> Analytics(a)lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/analytics >> >> > > _______________________________________________ > Analytics mailing list > Analytics(a)lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/analytics > >

Temperoarily fixed with https://gerrit.wikimedia.org/r/#/c/89247/. A more permanent fix is to make it not block that long :) -- Yuvi Panda T http://yuvi.in/blog

I'm looking into this guys. The largest cohort we have so far has over 2500 editors in it, so 700 is definitely not too big. I'm not sure how large something would have to be before it broke the system, but I'm guessing tens of thousands if not hundreds like Dario says. The 504 timeout should not be happening. Could one of you email me the cohort so I can test? Dan On Fri, Oct 11, 2013 at 1:58 PM, Dario Taraborelli < dtaraborelli(a)wikimedia.org&gt; wrote: