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Editorial Team
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Asked: 2026-06-05T06:42:03+00:00

I am importing a large csv file into mysql(30 million rows) and I had

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I am importing a large csv file into mysql(30 million rows) and I had another terminal open to show the process list. I used to be able to see the row count on the process list but now, whenever I enter the command “show process list” it hangs. I had 20 million records imported. Do I have to start all over again?
iostat:
[user@gggggg ~]$ iostat
Linux 2.6.18-308.4.1.el5 

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           5.02    0.00    0.16    0.87    0.00   93.95

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
sda               2.15         5.31        55.58    8644514   90425752
sda1              0.00         0.00         0.00       2138       5592
sda2              2.15         5.31        55.57    8640178   90419984
sda3              0.00         0.00         0.00       1582        176


top - 14:18:55 up 18 days, 20:00,  2 users,  load average: 2.02, 2.09, 2.06
Tasks: 106 total,   3 running, 103 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.2%us,  0.0%sy,  0.0%ni, 49.9%id, 49.8%wa,  0.0%hi,  0.2%si,  0.0%st
Mem:   8174532k total,  7656780k used,   517752k free,   105904k buffers
Swap:  4257216k total,       88k used,  4257128k free,  6958020k cached
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1 Answer

  1. Editorial Team

    First, check the filesize from the OS

    If the table is called mydb.mytable and it is MyISAM, do this:

    cd /var/lib/mysql/mydb
watch ls -l mytable.*

    If the filesize keeps growing, you are fine

    Don’t forget to check for diskspace

    df -h

    If you ran out of diskspace while loading a MyISAM table, mysqld is just sitting there. Why? According to MySQL 5.0 Certification Study Guide Page 408,409 Section 29.2 bulletpoint 11 says:

    If you run out of disk space while adding rows to a MyISAM table, no
    error occurs. The server suspends the operation until space becomes
    available, and then completes the operation.

    Therefore, if the data partition is out of diskspace, you must free up some space so mysqld can conitnue the LOAD DATA INFILE.

    If everything seems frozen, you may have to kill mysqld as follows:

    IDTOKILL=`ps -ef | grep mysqld_safe | grep -v grep | awk '{print $2}'`
kill -9 ${IDTOFKILL}
IDTOKILL=`ps -ef | grep mysqld | grep -v grep | awk '{print $2}'`
kill -9 ${IDTOFKILL}

    Then, check your diskspace

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