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From "Rob Godfrey (JIRA)" <qpid-...@incubator.apache.org>
Subject [jira] Resolved: (QPID-925) [Java Broker] Only begin store transactions when there is a persistent message to be committed
Date Wed, 16 Apr 2008 09:33:21 GMT

     [ https://issues.apache.org/jira/browse/QPID-925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rob Godfrey resolved QPID-925.
------------------------------

    Resolution: Fixed

Committed to the M2.1 (soon to be M2.x) branch as revision 648645.

Files changed (as per description):

broker/src/main/java/org/apache/qpid/server/ack/TxAck.java
broker/src/main/java/org/apache/qpid/server/txn/LocalTransactionalContext.java


> [Java Broker] Only begin store transactions when there is a persistent message to be
committed
> ----------------------------------------------------------------------------------------------
>
>                 Key: QPID-925
>                 URL: https://issues.apache.org/jira/browse/QPID-925
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Broker
>    Affects Versions: M2.1
>            Reporter: Rob Godfrey
>            Assignee: Rob Godfrey
>
> Currently all acks in transactional mode give rise to a transaction being started on
the store, and a later commit occuring.  Where a store is persistent this can give rise to
unnecessary disc access when all messages are in fact transient.
> Changes required to TxAck (to only provide an efficient method to check if there are
any peristsent messages being acknowledged) and LocalTransactionalContext

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