MySQL错误?“显示表状态”报告导入期间的行数变化

我将把4.1分钟的记录导入离线系统,以便对数据库的一个子集进行分析。在运行导入时,我尝试使用以下命令检查导入进度:

SHOW TABLE STATUS LIKE 'MailIssueElement'

奇怪的是…在不同的时间,我看到了 Rows . 我希望它只会上升。以下是输出示例:

mysql> show table status like 'MailIssueElement' \G
*************************** 1. row ***************************
           Name: MailIssueElement
         Engine: MyISAM
        Version: 10
     Row_format: Dynamic
           Rows: 2818307
 Avg_row_length: 120
    Data_length: 338392232
Max_data_length: 281474976710655
   Index_length: 158029824
      Data_free: 0
 Auto_increment: 10248973
    Create_time: 2010-02-03 10:58:41
    Update_time: 2010-02-03 11:04:06
     Check_time: 2010-02-03 10:58:53
      Collation: latin1_swedish_ci
       Checksum: NULL
 Create_options:
        Comment:
1 row in set (0.60 sec)

mysql> show table status like 'MailIssueElement' \G
*************************** 1. row ***************************
           Name: MailIssueElement
         Engine: MyISAM
        Version: 10
     Row_format: Dynamic
           Rows: 1870294
 Avg_row_length: 119
    Data_length: 223251912
Max_data_length: 281474976710655
   Index_length: 107688960
      Data_free: 0
 Auto_increment: 10248973
    Create_time: 2010-02-03 10:58:41
    Update_time: 2010-02-03 11:04:13
     Check_time: 2010-02-03 10:58:53
      Collation: latin1_swedish_ci
       Checksum: NULL
 Create_options:
        Comment:
1 row in set (0.35 sec)

mysql> show table status like 'MailIssueElement' \G
*************************** 1. row ***************************
           Name: MailIssueElement
         Engine: MyISAM
        Version: 10
     Row_format: Dynamic
           Rows: 3074205
 Avg_row_length: 120
    Data_length: 369507112
Max_data_length: 281474976710655
   Index_length: 171537408
      Data_free: 0
 Auto_increment: 10248973
    Create_time: 2010-02-03 10:58:41
    Update_time: 2010-02-03 11:04:36
     Check_time: 2010-02-03 10:58:53
      Collation: latin1_swedish_ci
       Checksum: NULL
 Create_options:
        Comment:
1 row in set (0.01 sec)

mysql> show table status like 'MailIssueElement' \G
*************************** 1. row ***************************
           Name: MailIssueElement
         Engine: MyISAM
        Version: 10
     Row_format: Dynamic
           Rows: 1870294
 Avg_row_length: 119
    Data_length: 223251912
Max_data_length: 281474976710655
   Index_length: 107688960
      Data_free: 0
 Auto_increment: 10248973
    Create_time: 2010-02-03 10:58:41
    Update_time: 2010-02-03 11:04:40
     Check_time: 2010-02-03 10:58:53
      Collation: latin1_swedish_ci
       Checksum: NULL
 Create_options:
        Comment:
1 row in set (0.00 sec)

这种行为有什么解释吗?有没有更好的方法来检查我的进口进度?

运行以下版本: 服务器版本:5.0.32-debian etch11-log debian etch distribution

编辑:

这是DDL。这是一个myisam表:

mysql> show create table MailIssueElement \G
*************************** 1. row ***************************
       Table: MailIssueElement
Create Table: CREATE TABLE `MailIssueElement` (
  `Id` int(11) NOT NULL auto_increment,
  `IssueId` int(11) NOT NULL default '0',
  `Date` datetime NOT NULL default '0000-00-00 00:00:00',
  `Direction` enum('inbound','outbound') NOT NULL default 'inbound',
  `ToAddr` varchar(255) NOT NULL default '',
  `FromAddr` varchar(255) NOT NULL default '',
  `CCAddrs` varchar(255) NOT NULL default '',
  `Subject` text NOT NULL,
  `ParentIssueElementId` int(11) default NULL,
  `ParentIssueElementType` enum('mail','phone') default 'mail',
  `AgentId` int(11) NOT NULL default '0',
  PRIMARY KEY  (`Id`),
  KEY `date_idx` (`Date`),
  KEY `IssueId` (`IssueId`),
  KEY `idx_agent_id` (`AgentId`)
) ENGINE=MyISAM AUTO_INCREMENT=15099881 DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

事先谢谢,

AJ