Bug #42784 archive tables cause 100% cpu usage and hang in show table status
Submitted: 12 Feb 2009 10:05 Modified: 6 Dec 2011 0:51
Reporter: Shane Bester (Platinum Quality Contributor) Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Archive storage engine Severity:S3 (Non-critical)
Version:5.0.88-debug, 5.1.31-debug, 5.1.42-debug OS:Any (Windows, Mac OS X)
Assigned to: Sergey Vojtovich 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:

[9 Dec 2009 16:07] Shane Bester
load tables into db. run "select * from information_schema.tables" on a debug build. observe memory corruptions

Attachment: tables.zip (application/zip, text), 102.67 KiB.

[10 Dec 2009 15:00] Shane Bester
more problems/details about original bug47012.c testcase.

Attachment: bug47012_5.1.43-debug_multiple_problems.txt (text/plain), 11.56 KiB.

[21 Sep 2011 12:17] Shane Bester
here is a stress test. still causes valgrind errors on trunk and 2GB mallocs on 5.5.17

Attachment: bug47012.c (text/plain), 146.64 KiB.