For at least the last half hour or so (since ca 4:00 pm PST) and perhaps longer, special:RecentChanges has been spewing out an error instead of links:

Warning: Supplied argument is not a valid MySQL result resource in /home/wiki-newest/work-http/special_recentchanges.php on line 82

Warning: Supplied argument is not a valid MySQL result resource in /home/wiki-newest/work-http/special_recentchanges.php on line 83

This is the main query, which when I try it manually via special:AskSQL as:

SELECT cur_timestamp, cur_title, cur_comment, cur_user, cur_user_text, cur_minor_edit, COUNT(old_id) + (IF(cur_minor_edit = 2,0,1)) AS changes FROM cur LEFT OUTER JOIN old ON cur_title = old_title AND old_timestamp > SUBDATE(CURRENT_TIMESTAMP, INTERVAL 2 DAY) AND old_minor_edit <> 2 WHERE cur_timestamp > SUBDATE(CURRENT_TIMESTAMP, INTERVAL 2 DAY) GROUP BY cur_title ORDER BY cur_timestamp DESC LIMIT 250

I got this MySQL error message: "Got error 127 from table handler". Well, I don't know what it means, but there it is.

Apparently (http://www.mysqldeveloper.com/faqs/index.pcgi?id=40) this means: What does "Got error 127 from table handler" mean This error literally means: Record-file is crashed

To correct this error; simply run myisamchk or REPAIR <tbl>; against that table.

(Note that in order to get the possibly useful MySQL error message when a query goes wrong, you have to explicitly check the return values from the database calls and then return the string from mysql_error(); by default, all PHP gives you is the complaint about invalid result resources when the return code from a query is used in another call.)

-- brion vibber (brion @ pobox.com)