MySQL Bugs: #99205: xa prepare write binlog while execute failed

Bug #99205	xa prepare write binlog while execute failed
Submitted:	8 Apr 2020 1:36	Modified:	8 Apr 2020 11:18
Reporter:	phoenix Zhang (OCA)	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: XA transactions	Severity:	S2 (Serious)
Version:	8.0.18, 8.0.19	OS:	Any
Assigned to:		CPU Architecture:	Any
Tags:	group_replication, xa

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

i add a test-case about this bug. run it with command: ./mtr group_replication.gr_xa_prepare_bug --nocheck-testcase

Attachment: gr_xa_prepare_bug.test (application/octet-stream, text), 1.37 KiB.

this patch can repeat the problem without group_replicaiton. run ./mtr main.xa_prepare_bug --nocheck-testcase

Attachment: xa_prepare_bug.diff (text/x-patch), 1.15 KiB.