Question

I’m importing 4.1mil records into an offline system to do some analysis on a subset of our database. As I’m running the import, I’m trying to check its progress by using:

SHOW TABLE STATUS LIKE 'MailIssueElement'

What’s odd…at different times, I’m seeing higher AND lower values for Rows. I would expect it to only go up. Here is a sample of the output:

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)

Is there an explanation for this behavior? Is there a better way to check the progress of my import?

Running the following version: Server version: 5.0.32-Debian_7etch11-log Debian etch distribution

---

EDIT:

Here is the DDL. It is a MyISAM table:

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)

Thanks in advance,

-aj

Answer 1

OK, it looks like it was a bug reported and fixed. Guess I need to finally upgrade from Etch to Lenny and get those newer packages…thanks for trying all.