MySQL Bugs: #19808: Online config. Wrong error message if DataMemory less than a data on cluster

Bug #19808	Online config. Wrong error message if DataMemory less than a data on cluster
Submitted:	14 May 2006 20:53	Modified:	6 Dec 2006 4:46
Reporter:	Serge Kozlov	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Cluster: Cluster (NDB) storage engine	Severity:	S3 (Non-critical)
Version:	5.1.10 (beta)	OS:	Linux (Linux FC4)
Assigned to:	justin he	CPU Architecture:	Any

Description:
A cluster has a data. DataMemory was decreased to min.value in config.ini and management daemon was restarted. New value of DataMemory cannot work for data of cluster because it isn't enough. But the error message says nothing about wrong value (too small) of DataMemory if try to restart data nodes for case above:

Time: x 14 May 2006 - 22:34:34
Status: Temporary error, restart node
Message: Internal program error (failed ndbrequire) (Internal error, programming
 error or missing error message, please report a bug)
Error: 2341
Error data: restore.cpp
Error object: RESTORE (Line: 1150) 0x0000000a
Program: /home/ndbdev/skozlov/builds/libexec/ndbd
Pid: 4317
Trace: /space/run/ndb_2_trace.log.1
Version: Version 5.1.10 (beta)
***EOM***

How to repeat:
1. Create config.ini 2 ndbd nodes and DataMemory = 200M (and 1 mgmd, 1 mysqld)
2. Start cluster.
3. Run ./load_tpcb.pl ndb16 3306 root BLANK ndb
4. Change DataMemory = 1M in config.ini
5. Stop ndb_mgmd 
6. Start ndb_mgmd (new value DataMemory applied)
7. Restart data node (X RESTART)
8. Look at error_log.

Suggested fix:
Add correct error message if new value of DataMemory cannot be applied for a data on cluster.

Same error message for 5.1.13-bk. Argument list for load_tpcb.pl was a bit changed. Now need to use following step:
3. Run ./load_tpcb.pl -sp /tmp/mysql.sock -sock ndb16 3306 root BLANK ndb

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/15280

ChangeSet@1.2320, 2006-11-14 09:33:43+08:00, Justin.He@dev3-47.dev.cn.tlan +1 -0
  BUG#19808, Online config. Wrong error message if DataMemory less than a data on cluster

Thank you for your bug report. This issue has been committed to our source repository of that product and will be incorporated into the next release.

If necessary, you can access the source repository and build the latest available version, including the bug fix. More information about accessing the source trees is available at

    http://dev.mysql.com/doc/en/installing-source.html

Documented bugfix in 5.1.14 changelog.