mysql磁盘空间不足报错

### Cause: java.sql.SQLException: Error writing file '/tmp/MY9ZJS2s' (Errcode: 28 - No space left on device)
; uncategorized SQLException for SQL []; SQL state [HY000]; error code [3]; Error writing file '/tmp/MY9ZJS2s' (Errcode: 28 - No space left on device); nested exception is java.sql.SQLException: Error writing file '/tmp/MY9ZJS2s' (Errcode: 28 - No space left on device)] with root cause
java.sql.SQLException: Error writing file '/tmp/MY9ZJS2s' (Errcode: 28 - No space left on device)

 报错原因：

1、磁盘空间不足。

2、可能是执行了大的sql语句，把临时空间占满了。