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