Bug #28329 missleading error message on attempt to do parallel backups
Submitted: 9 May 2007 7:39
Reporter: Hartmut Holzgraefe Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Cluster: Cluster (NDB) storage engine Severity:S4 (Feature request)
Version:mysql-5.1 OS:Any
Assigned to: Assigned Account CPU Architecture:Any
Tags: 5.0, 5.1
Triage: Triaged: D5 (Feature request)

[9 May 2007 7:39] Hartmut Holzgraefe
Description:
When trying to start a backup while another one is still being processed both ndb_mgm clients receive the following error message

Node 3: Backup request from 1 failed to start. Error: 1302 - Out of
backup record: Permanent error: Internal error

there are several issues with this:

 - the message also showing on the succeeding ndb_mgm is confusing

 - as long as we don't support parallel backups the error message
   should read "Another backup is already in progress" instead of
   "Out of backup record" as the current message implies that this
   is already configurable 

 - i would consider this a "Temporary error", not "Permanent error"
   as the action would succeed as soon as the other ongoing backup
   has finished

How to repeat:
try to start a backup from 2 ndb_mgm consoles at the same time

Suggested fix:
show the error message on the failing ndb_mgm only, and as long as parallel backups are not supported the error message should be changed