Bug #50437 Innodb: Maximum key size limit for 4-byte utf8 is reduced from 255 to 191 chars
Submitted: 19 Jan 2010 10:31 Modified: 25 Jan 2010 20:44
Reporter: Alexander Barkov Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Charsets Severity:S3 (Non-critical)
Version:5.5, 6.1 OS:Any
Assigned to: CPU Architecture:Any

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: