https://bugzilla.wikimedia.org/show_bug.cgi?id=71435
Bug ID: 71435
Summary: Duplicates/missing logs from esams bits for
2014-09-28T{18,19,20}:xx:xx
Product: Analytics
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Refinery
Assignee: wikibugs-l@lists.wikimedia.org
Reporter: christ...@quelltextlich.at
CC: bugwatc...@sb-mail.wmflabs.org,
christ...@quelltextlich.at, dandree...@wikimedia.org,
kle...@wikimedia.org, oke...@wikimedia.org,
o...@wikimedia.org, tneg...@wikimedia.org
Blocks: 70085
Web browser: ---
Mobile Platform: ---
Between, 2014-09-28T18:31:10 and 2014-09-28T20:06:34 all esams bits
caches saw both duplicate and missing lines.
Looking at the Ganglia graphs, it seems we'll see the same issue also
for today (2014-09-29).
While the issue was going on today, there was a discussion
about it in IRC [1].
It is not clear what happened.
The theory up to now is that due to recent config changes around
varnishkafka, esams bits traffic can no longer be handled with 3
brokers (we're currently using only 3 out of 4 brokers).
[1] Starting at 19:04:03 at
http://bots.wmflabs.org/~wm-bot/logs/%23wikimedia-analytics/20140929.txt
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