[jbossts-issues] [JBoss JIRA] Updated: (JBTM-352) Memory leak in TransactionReaper._timeouts
Ivan Szanto (JIRA)
jira-events at lists.jboss.org
Thu Mar 27 06:28:52 EDT 2008
[ http://jira.jboss.com/jira/browse/JBTM-352?page=all ]
Ivan Szanto updated JBTM-352:
This fixes the memory leak. Tested it by running ~ 100,000 transactions with good results.
This is why I think it is a good starting point, but this is probably not the best way to fix this problem, because it is both ugly and slow to use instanceof. I wrote it this way, because there are 3 methods (remove, getTimeout and getRemainingTimeout) that pass the hashtable key as an Object, therefore I was not sure if the only things I can recieve here are Reapable and Uid objects.
> Memory leak in TransactionReaper._timeouts
> Key: JBTM-352
> URL: http://jira.jboss.com/jira/browse/JBTM-352
> Project: JBoss Transaction Manager
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: Transaction Core
> Affects Versions: 4.3.0.GA
> Environment: Compiled 4.3.0.GA for the EAP 4.3 as JTS according to the instructions (by setting JBOSS_HOME to jboss-5.0.0.Beta4) on RHEL4.
> Run ~ 1500 JMS transactions in EAP 4.3 all configuration on RHEL4 to see it leaks.
> Used Sun jdk 220.127.116.11
> Reporter: Ivan Szanto
> Attachments: TransactionReaper.java
> The leak can also be seen by using the debugger to check the number of entries in TransactionReaper._timeouts after a couple of transactions.
> It appears that the TransactionReaper.insert method uses ControlWrapper objects as keys when putting elements into the hashtable, but the TransactionReaper.remove method sometimes unsuccessfully tries to use Uid ojbects to remove them.
> I will post a corrected version of TransactionReaper.java.
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