Bug #16695 Reading I_S.PARTITIONS with pre-5.1.6 partitioned tables crashes server
Submitted: 21 Jan 2006 7:42 Modified: 14 Feb 2006 11:56
Reporter: Jon Stephens
Status: Closed
Category:Server: Partition Severity:S2 (Serious)
Version:5.1.6-20060118-bk OS:Linux (SuSE 9.3)
Assigned to: Sergey Gluhov Target Version:

[21 Jan 2006 7:42] Jon Stephens 
Description:
See "How To Repeat".

How to repeat:
1. Create partitioned tables in 5.1.5 server, then upgrade to 5.1.6 that uses new
partition file naming scheme; OR import table and partition files that were created using
5.1.5 or earlier release to a 5.1.6 server that uses the new partition file naming
scheme.

2. mysql> SELECT * FROM INFORMATION_SCHEMA.PARTITIONS;
ERROR 2006 (HY000): MySQL server has gone away

Suggested fix:
Return an error message such as "Incompatible partitioned tables present on server"
rather then crashing.

Note: Stopping the server, deleting the pre-5.1.6 table and partition files, and then
restarting the server appears to fix the problem. (Quits crashing and you can read the
PARTITIONS table after this.)
[6 Feb 2006 13:01] Bugs System 
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/2184
[14 Feb 2006 9:48] Bugs System 
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/2576
[14 Feb 2006 9:58] Sergey Gluhov 
Fixed in 5.1.7
[14 Feb 2006 11:56] Jon Stephens 
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 bugfix, yourself. More information 
about accessing the source trees is available at
    http://www.mysql.com/doc/en/Installing_source_tree.html

Additional info:

Fix/feature change documented in 5.1.7 changelog and 5.1 Manual Partitioning chapter. Bug
closed.