Bug #48217 Endless InnoDB warning: trying to read doublewrite buffer page 171
Submitted: 21 Oct 2009 21:35 Modified: 30 Nov 2009 9:49
Reporter: Oleg Petrachev Email Updates:
Status: Can't repeat Impact on me:
None 
Category:MySQL Server: InnoDB storage engine Severity:S3 (Non-critical)
Version:5.1.36 OS:FreeBSD
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: