Bug #68042 MySQL wedges with "Waiting for table metadata lock"
Submitted: 6 Jan 2013 16:24 Modified: 8 Jan 2013 0:26
Reporter: Jon Ribbens Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server Severity:S1 (Critical)
Version:5.5.28 OS:Linux (Ubuntu precise (12.04.1 LTS))
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: