The thread that I killed is still on my thread list How do I eliminate it?
+-----+------+-----------+-------------+---------+-------+-----------+------------------------------------------------------------------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+-----+------+-----------+-------------+---------+-------+-----------+------------------------------------------------------------------------------------------------------+
| 678 | root | localhost | hthtthv | Killed | 36923 | query end | INSERT INTO `gtgttg` VALUES (1,'tgtg'),(2,'Shopping'),(4,'tgtgtg'),( |
| 695 | root | localhost | NULL | Query | 0 | NULL | show processlist |
+-----+------+-----------+-------------+---------+-------+-----------+------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
It needs to revert the actions it did, so this can take a long time. If it is an INNODB database, you can for instance look at this question: https://dba.stackexchange.com/questions/5654/internal-reason-for-killing-process-taking-up-long-time-in-mysql
So in the end: you need to wait for it to be eliminated