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Maximum row size
Posted by: Andy Thomas
Date: August 31, 2018 05:08AM

I have always understood that the maximum length of a row (record) in a MySQL 5.6 database using the InnoDB engine is 8126 bytes. But while troubleshooting an existing database which has recently started coming up with the error:

Exception caught: (1118, 'Row size too large (> 8126).

I noted some rows are as much as 3.4 Mbytes in length when dumped to a file! Most of the columns are of type longtext so if there is a 8126 byte row limit, how did the user manage to get so much data into the table?

Incidentally, 'setting innodb_log_file_size = 512M' and 'innodb_strict_mode = 0' has not resolved this issue.

Andy

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