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From "Jarek Gawor (JIRA)" <axis-...@ws.apache.org>
Subject [jira] Resolved: (AXIS-2362) Re-use of MultiThreadedConnectionManager in CommonsHTTPSender
Date Sat, 13 May 2006 04:17:09 GMT
     [ http://issues.apache.org/jira/browse/AXIS-2362?page=all ]
     
Jarek Gawor resolved AXIS-2362:
-------------------------------

    Resolution: Fixed

The CommonsHTTPSender was updated to reuse the MultiThreadedConnectionManager.

> Re-use of MultiThreadedConnectionManager in CommonsHTTPSender
> -------------------------------------------------------------
>
>          Key: AXIS-2362
>          URL: http://issues.apache.org/jira/browse/AXIS-2362
>      Project: Apache Axis
>         Type: Bug

>   Components: Basic Architecture
>     Versions: 1.2, 1.2.1
>     Reporter: Amanda Hopgood

>
> When using CommonsHTTPSender then a new MultiThreadedConnectionManager is created for
each instance. This means that the MultiThreadedConnectionManager is unique per Service object,
and this is preventing our connections being re-used. The MultiThreadedConnectionManager should
be able to be shared between different HTTPClient objects, and this request is to alter CommonsHTTPSender
so that a single instance of MultiThreadedConnectionManager is created and used by many instances
of CommonsHTTPSender.
> In our application we have a Service object per calling thread, and so with the current
implementation there is one MultiThreadedConnectionManager per thread, and so we are getting
more connections then we really desire.
> The reason we have a Service object per calling thread, was because we have seen ConcurrentModificationExceptions
if we perform load tests whilst sharing Service objects over threads, i.e.
> java.util.ConcurrentModificationException
> at java.util.WeakHashMap$HashIterator.nextEntry(WeakHashMap.java:726)
> at java.util.WeakHashMap$KeyIterator.next(WeakHashMap.java:759)
> at 
> org.apache.axis.attachments.ManagedMemoryDataSource.delete(ManagedMemoryDataSource.java:454)
at 
> org.apache.axis.attachments.AttachmentsImpl.writeContentToStream(AttachmentsImpl.java:476)

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