LP #1307377: pt-stalk ominous open_tables function

**Reported in Launchpad by MikeG last update 17-11-2016 12:11:25

Currently the open_tables function logs to the TS-opentables files what appears to be an error message, rather than a warning:

open_tables() {
local open_tables=$($CMD_MYSQLADMIN $EXT_ARGV ext | grep "Open_tables" | awk '

{print $4}

')
if [ -n "$open_tables" -a $open_tables -le 1000 ]; then
$CMD_MYSQL $EXT_ARGV -e 'SHOW OPEN TABLES' &
else
log "Too many open tables: $open_tables"
fi
}

This would be less confusing if it had a log entry that was more verbose, such as the following:

log "Logging disabled due to having over 1000 tables open. Number of tables currently open: $open_tables"