Bug #40999 Cluster cannot increase undo log buffer size.
Submitted: 25 Nov 2008 5:34
Reporter: Mikiya Okuno Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Cluster: Disk Data Severity:S4 (Feature request)
Version:mysql-5.1-telco-6.3 OS:Any
Assigned to: CPU Architecture:Any

[25 Nov 2008 5:34] Mikiya Okuno 
Description:
Currently, an undo log buffer size can be specified when creating a logfile group. If someone wants to change its size, he or she should follow the steps below:

o Dump all tables using mysqldump
o Drop all tables, data files, table spaces, then logfile groups.
o Re-create the logfile group using larger undo buffer, table spaces.
o Restore all tables from the dump.

This could take a long time, so this could not be practical in production environment.

Since undo buffer size is critical to disk-table performance, so it should be changeable on the fly. At least it should be ready to be increased.

How to repeat:
n/a

Suggested fix:
n/a