(+Jaime) It’s hard to tell how long it will take, but I imagine for quite a while. I guess a day max, but probably much less. If Jaime let’s me know that he’s finished early, and I am close enough to a computer, I’ll turn the EventLogging MySQL processes back on asap.
On Wed, Jan 20, 2016 at 4:12 PM, Oliver Keyes <[email protected]> wrote: > Thanks Madhu! Awesome to see the transparency and announces around this :D. > > Do you know how long the reimport should take on Monday? I want to > make sure I know when to expect we can safely launch all our scripts. > > On 20 January 2016 at 13:08, Madhumitha Viswanathan > <[email protected]> wrote: > > Hi all, > > > > In order to convert tables on db1046 to the TokuDB engine - we have to > > schedule some downtime on the Eventlogging databases between tomorrow, > > Thursday Jan 21, 2016 at 16:00 UTC to Monday Jan 25, 2016 16:00 UTC. > > > > What this means for EL users: > > > > 1. Eventlogging will still receive data and it will be available in > Kafka. > > The data will continue to be imported into Hadoop and files. > > 2. The Mysql consumers of Eventlogging will be stopped, so no data will > get > > imported into the master(db1046 or m4-master) and by extension to the > > analytics-store. > > 3. Querying existing data from analytics-store will still be available, > but > > data for the next 4 days won't be available. > > 4. On Monday, after the maintenance window we'll restart the Mysql > > consumers, and all the data should get reimported from Kafka. > > > > Analytics and Ops(DBA) will work on this together. > > > > Feel free to reach out to us here or on #wikimedia-analytics if you have > any > > concerns/questions. > > > > > > -- Madhu Viswanathan > > Software Engineer, Analytics > > > > _______________________________________________ > > Engineering mailing list > > [email protected] > > https://lists.wikimedia.org/mailman/listinfo/engineering > > > > > > -- > Oliver Keyes > Count Logula > Wikimedia Foundation > > _______________________________________________ > Engineering mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/engineering >
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