MySQL Bugs: #60563: ALTER TABLE hangs waiting for metadata lock when NO other sql stmt is running

Bug #60563	ALTER TABLE hangs waiting for metadata lock when NO other sql stmt is running
Submitted:	21 Mar 2011 10:56	Modified:	8 Jul 2011 19:27
Reporter:	Boris Livshutz	Email Updates:
Status:	Can't repeat	Impact on me:	None
Category:	MySQL Server: Locking	Severity:	S2 (Serious)
Version:	5.5.10	OS:	Linux
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:

On *nix platforms use the split command e.g. split -b 50MB <my_large_archive> <my_split_archive_prefix>
On windows use WinZip or a similar utility to split the large file

show processlist, show engine innodb status, and show create table

Attachment: show.log.zip (application/zip, text), 7.22 KiB.

show processlist, show engine innodb status, and requested selects from performance schema

Attachment: bug-60563.txt (text/plain), 19.42 KiB.