Bug #82320 ALTER Table failure with DUPLICATE key causes a crash
Submitted: 22 Jul 2016 8:33 Modified: 22 Jul 2016 8:52
Reporter: Krunal Bauskar Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: InnoDB storage engine Severity:S2 (Serious)
Version:5.6, 5.6.31 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: