[jboss-jira] [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java

Thu May 10 13:56:52 EDT 2007

    [ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12361999 ] 

Mark Little commented on JBTM-218:
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As with 216, this is called whenever a thread needs to get the currently associated transaction (which could be an imported transaction, a deeply nested transaction etc.) The transaction has multiple representations in JBossTS: JTA, core, JTS and WS-T. In this case, obviously it's just JTA and core, but we need to do a mapping from one to the other, which is what's happening here. It needs to be synchronized on all accesses.

> Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
> ---------------------------------------------------------------------------------------------------
>
>                 Key: JBTM-218
>                 URL: http://jira.jboss.com/jira/browse/JBTM-218
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: JTA Implementation
>    Affects Versions: 4.2.3
>            Reporter: Phillip Thurmond
>         Assigned To: Mark Little
>
> I'm seeing some contention on the object _transactions in the class com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.  Most of the contention happens in the getTransaction() method.

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