MySQL Bugs: #32585: concurrent DDL on partitioned tables causes threads to hang

Bug #32585	concurrent DDL on partitioned tables causes threads to hang
Submitted:	21 Nov 2007 17:27	Modified:	24 Nov 2007 0:13
Reporter:	Shane Bester (Platinum Quality Contributor)	Email Updates:
Status:	Can't repeat	Impact on me:	None
Category:	MySQL Server: Partitions	Severity:	S1 (Critical)
Version:	5.1.23	OS:	MacOS
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

testcase. run for some seconds and monitor the processlist for hung queries.

Attachment: bug32585.c (text/plain), 5.19 KiB.

some thread stack traces when they are hung.

Attachment: bug32585_thread_stacks.txt (text/plain), 11.58 KiB.

the testcase actually caused a crash too. here's the stack trace for that.

Attachment: bug32585_crash_stack_trace.txt (text/plain), 1.60 KiB.