MySQL Bugs: #2825: Executing a query consumes up to 100% CPU power

Bug #2825	Executing a query consumes up to 100% CPU power
Submitted:	16 Feb 2004 7:03	Modified:	5 Mar 2004 2:59
Reporter:	Hansjoerg Wingeier	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: MyISAM storage engine	Severity:	S2 (Serious)
Version:	4.0.18/4.1.2	OS:	Windows (Windows 2000/Suse 9.0)
Assigned to:	Michael Widenius	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

Skript to build the used schema

Attachment: lockedquerydata.sql (application/octet-stream, text), 67.22 KiB.

Query that resulted in consuming almost 100% of CPU power

Attachment: query.sql (application/octet-stream, text), 1.92 KiB.