Hi,
I have got the same issue on all MariaDB 10.0 => 10.1 (jessie to
stretch) upgraded servers.
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/*
Mit freundlichem Gruß / With kind regards,
Patrick Matthäi
GNU/Linux Debian Developer
Blog: http://www.linux-dev.org/
E-Mail: pmatthaei at debian.org
patrick at linux-dev.org
*/