Ariel:
I have updated couple tickets, I think much of this work can be avoided by
using infrastructure we already have deployed and working at scale, namely
hadoop and oozie (scheduling platform).
More so, we just wrapped up our first round of code to reconstruct the edit
history from mediawiki database taking advantage of scala and parallel
computations in spark/yarn. All this work can be applied to shortcut much
of the work you have tasked on phabricator for dumps. Using the same
methodology you can rebuild not only dumps going forward but probably all
dumps existing to date.
Thanks,
Nuria
On Tue, Sep 13, 2016 at 5:00 AM, Leila Zia <leila(a)wikimedia.org> wrote:
FYI
---------- Forwarded message ----------
From: Ariel Glenn WMF <ariel(a)wikimedia.org>
Date: Mon, Sep 12, 2016 at 9:07 AM
Subject: [Research-Internal] Fwd: Dumps Rewrite getting underway (help
needed!)
To: research-internal(a)lists.wikimedia.org
---------- Forwarded message ----------
From: Ariel Glenn WMF <ariel(a)wikimedia.org>
Date: Mon, Sep 5, 2016 at 2:35 PM
Subject: Dumps Rewrite getting underway (help needed!)
To: Wikipedia Xmldatadumps-l <Xmldatadumps-l(a)lists.wikimedia.org>
Hello folks,
I know a number of you have subscribed to the Dumps Rewrite project (
https://phabricator.wikimedia.org/tag/dumps-rewrite/) but I bet none of
you actually watch it or any of its tasks. So here's a heads up.
I'm getting started on work on the job scheduler/workflow manager piece;
this would accept lists of dump tasks (in the current setup, "dump stubs
for el wikipedia"), call a callback to turn each of them into small jobs
that can be completed in less than an hour, submit and monitor these jobs
with retries, dependencies etc, call a callback to recombine the outputs of
the jobs, and notify some caller on success of te whole operation.
First up is evaluating existing packages and choosing one to use as a
foundation. Please contribute! See the following tasks:
https://phabricator.wikimedia.org/T143205: Draft usage scenarios for
job/workflow manager <https://phabricator.wikimedia.org/T143205>
https://phabricator.wikimedia.org/T143206: List requirements needed for
task/job/workflow manager <https://phabricator.wikimedia.org/T143206>
https://phabricator.wikimedia.org/T143207: Evaluate software packages for
job/task/workflow management <https://phabricator.wikimedia.org/T143207>
Also, can someone please forward this on to analytics-l and research-l?
I'm not on those lists but they will no doubt have a lot of useful
expertise here.
Thanks!
Ariel
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