[jira] Resolved: (QPID-720) Setting the 0.10 headers is a cpu expensive operation.

["Arnaud Simon (JIRA)" <qp...@incubator.apache.org>]

     [ https://issues.apache.org/jira/browse/QPID-720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arnaud Simon resolved QPID-720.
-------------------------------

       Resolution: Fixed
    Fix Version/s: M3

Several changes were required: 
Struct and the generation process have been updated so to set a dirty flag when message properties are updated. 
Message and session have been updated so that to cash headers 
Message producer has been updated so that not to reset headers 


> Setting the 0.10 headers is a cpu expensive operation. 
> -------------------------------------------------------
>
>                 Key: QPID-720
>                 URL: https://issues.apache.org/jira/browse/QPID-720
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Client
>    Affects Versions: M3
>            Reporter: Arnaud Simon
>             Fix For: M3
>
>
> When profiling java performance tests I fond out that the a 0.10 client is spending most of its time computing message headers.  It would improve performances if those headers were cashed. 

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