Comments - Buffer size issue?
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Oops! It reverted after a crash!
I had changed it in /etc/my.cnf, but that is apparently not being set.
Is there any other reason MariaDB would be changing the value of group_concat_max_len -- or not reading it from /etc/my.cnf?
Argh. The distribution I used (Homebrew) put my.cnf in /usr/local/etc/my.cnf.d/.
I put a comment on the page about my.cnf, warning people that it might not be where expected: