mysql> TRUNCATE TABLE `user_ourproperty`;
ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction
And if I try to empty it with a DELETE command, I get a different error:
mysql> DELETE FROM user_ourproperty WHERE 1 LIMIT 1000000;
ERROR 1297 (HY000): Got temporary error 233 'Out of operation records in
transaction coordinator (increase MaxNoOfConcurrentOperations)' from ndbcluster
在mysql cluster 中进行了较长时间的操作时，就会报这样的提示。当这样时我就用少量数据的操作，减少事务的处理时间，使得事务处理时间在MaxNoOfConcurrentOperations设置范围之内。