Since 2013-11-13 we have been seeing lines like
cp1046.eqiad.wmnet 1008323724 201cp3011.esams.wikimedia.org 6978832710 2013-11-15T19:29:25 [...]
in the mobile and zero logs. There, part of a log line (part past 201
in the third column) got overwritten by a new line
(cp3011.esams[...]). All 16 fields of this new line gets written,
followed by a line feed. The next line is a normal log line again.
For each file we had between 5 to 15 such lines.
We did not see such lines for the sampled-1000 logs.