FYI, This has started. I have turned off the MySQL processes. No new data will be inserted into MySQL until we turn them back on.
On Wed, Jan 20, 2016 at 4:43 PM, Andrew Otto <[email protected]> wrote: > (+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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