Bug #73594 ClassCastException in MysqlXADataSource if pinGlobalTxToPhysicalConnection=true
Submitted: 15 Aug 2014 7:26 Modified: 10 Sep 2014 1:07
Reporter: Alexander Soklakov Email Updates:
Status: Closed Impact on me:
None 
Category:Connector / J Severity:S3 (Non-critical)
Version:5.1.32 OS:Any
Assigned to: Alexander Soklakov CPU Architecture:Any

[15 Aug 2014 7:26] Alexander Soklakov 
Description:
This is a regression of Bug#62577, fix introduced in c/J 5.1.32 missed on ConnectionImpl occurrence in case pinGlobalTxToPhysicalConnection set to true.

How to repeat:
Try to create XA connection with load-balanced URL and pinGlobalTxToPhysicalConnection=true (see David Martín's comment in Bug#62577).

Suggested fix:
Replace the missed cast to com.mysql.jdbc.ConnectionImpl with cast to com.mysql.jdbc.Connection in MysqlXADataSource as in previous patch.
[10 Sep 2014 1:07] Daniel So 
Added the following entry to the Connector/J 5.1.33 changelog:

"XA connections failed with a class cast exception for a load-balanced configuration with pinGlobalTxToPhysicalConnection=true. This was because some XA-related classes used com.mysql.jdbc.ConnectionImpl in method parameters during calls. This fix makes the classes use com.mysql.jdbc.Connection instead in those cases."