We are working at this time on backfilling data for the scheduled
maintenance, we shall report when we think backlogging has finished.
Thanks,
Nuria
On Mon, Jan 25, 2016 at 5:34 AM, Oliver Keyes <okeyes(a)wikimedia.org> wrote:
Awesome; thanks :). Anything on the switchon time? (I
appreciate it's
only barely Monday ;p)
On 21 January 2016 at 11:36, Andrew Otto <otto(a)wikimedia.org> wrote:
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 <otto(a)wikimedia.org> 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 <okeyes(a)wikimedia.org>
> 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
>> <mviswanathan(a)wikimedia.org> 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
>
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>
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>
--
Oliver Keyes
Count Logula
Wikimedia Foundation
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