Comment 2 for bug 1006095

We've been seeing similar errors on our database ( 500GB table ). Using Percona 5.5.23-55-log, the trigger was doing an "ALTER TABLE t ROW_FORMAT=COMPRESSED".

In a screen, i started it, and when i came back later that day, this is what i saw:

mysql> alter table t ROW_FORMAT=COMPRESSED;
ERROR 2013 (HY000): Lost connection to MySQL server during query