Description:
When creating a table in MySQL Cluster on a system with at least 2 node groups the
data becomes unbalanced. On a 4-node system with 2 replicas, 75% of the data goes
into nodegroup 0 and only 25% of the data goes into nodegroup 1.

How to repeat:
Load table, use all dump 1000 to see the size of data memory used.

Suggested fix:
Fix allocation of default nodegroups in
execCREATE_FRAGMENTATIONREQ in DBDIH
Now becomes 0,0,1,0 should be 0,1,0,1 for a 4-node system.

Reviewed by Jonas Oreland

Testing the patch showed that the fix rather introduced a bug rather than fixed it.
It did also point to the cause of the problem being the implementation of BLOB's.
For some reason all BLOB's are stored in partition 0.

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/11149

ChangeSet@1.2301, 2006-08-31 10:54:34+02:00, pekka@orca.ndb.mysql.com +1 -0
  ndb - bug#21690 workaround-fix, cleanup in separate patch

pushed into 5.1.12

Documented bugfix in 5.1.12 changelog.

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/12519

ChangeSet@1.2318, 2006-09-26 14:21:52+02:00, pekka@orca.ndb.mysql.com +6 -0
  ndb - bug#21690: cleanup: set column properties in any order before create

Pekka just sent out a patch for a cleanup.

Per Pekka's remarks, and since the server bugfix has been documented, I'm changing the
bug's category/status to Docs/NDI and reassigning it to myself.

Per Pekka's remarks, and since the server bugfix has been documented, I'm changing the
bug's category/status to Docs/NDI and reassigning it to myself.

Thank you for your bug report. This issue has been addressed in the documentation. The
updated documentation will appear on our website shortly, and will be included in the next
release of the relevant products.

Added preliminary documentation of new API methods to Cluster API Guide.

Docs changeset - http://lists.mysql.com/commits/15822

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/16261

ChangeSet@1.2337, 2006-12-01 02:06:37+01:00, pekka@orca.ndb.mysql.com +2 -0
  ndb - bug#21690: fix typo which changed blob parts distribution

A typo in cleanup patch made it _too_ balanced.

No new functionality or other changes to document for the corrective patch - closed bug
without further action.