collect data error

[heipacker]

exception like blow:
Unhandled python exception in read callback: ValueError: invalid literal for int() with base 10: 'log'
Nov 21 21:40:53 tw07149 collectd[22868]: Traceback (most recent call last):
Nov 21 21:40:53 tw07149 collectd[22868]: File "/usr/lib/collectd/python/collectd-mysql.py", line 544, in read_callback#012 innodb_status = fetch_innodb_stats(conn)
Nov 21 21:40:53 tw07149 collectd[22868]: File "/usr/lib/collectd/python/collectd-mysql.py", line 465, in fetch_innodb_stats#012 stats[key] = int(row[value])
Nov 21 21:40:53 tw07149 collectd[22868]: ValueError: invalid literal for int() with base 10: 'log'
Nov 21 21:40:53 tw07149 collectd[22868]: read-function of plugin `python.collectd-mysql' failed. Will suspend it for 20.000 seconds.
Nov 21 21:41:01 tw07149 collectd[18164]: